We are committed to a high level of customer satisfaction and we look forward to hearing your concerns, comments or suggestions. Your questions, no matter big or small, are always welcome. Please do not hesitate to contact us in any way that you prefer. (Please do not send any returns to the address below. If you need to return a product, please contact us at service@droking.com )
Working Hours:
Monday to Friday: 09:30 – 18:00 (Hong Kong Time: GMT + 8)
Email:
Any questions, please feel free open a topic on FORUM or send email to: service@droking.com, we will respond your emails within 24 hours during weekdays, 48 hours at weekends.
Phone:
+86 1-713-083-4905
Facebook:
Be our friend on https://www.facebook.com/drokingcom and we’ll friend you back. We welcome you to place any concerns you might have on our Facebook page. Yes, Facebook is a public place where the whole Internet is listening. But we welcome such transparency in our customer relationships.
I have a 12v 500w single output power supply and a 12v 400w drill motor. Just purchased your small 0.56 tachometer on amazon… How do I wire it?
Could you please give me the link of the item you buy. so we can get the exactly detail. thanks
I now have 5 of your products all are 5 stars, good products good service the best.
Hi, thank you very much! Any questions, don’t hesitate to contact us.
Just purchased meter with v and amps. including shunt. Meter has tree wires and no directions on connections? Black, Yellow and red..???
Verl K.
Hi, thanks for your business. could you please tell us your order number? So you want to get a wiring diagram right?
I also got the same one and also wasn’t any instructions. They need to include instructions for the shunt three wire DC volt amp gauges.
Hi Gary Edwards，
Thank you for writing in and sorry for the inconvenience caused on you.
Could you please tell us your order ID or the link of the product so that we can ensure which product you are referring to?
With your help, we can find a solution more quickly.
Best regards
I have a 2×80 24V 2 channel amplifier in an enclosure. A 12V battery with 12/24 step-up with 24V on the output side. when adding inout volume from the source, the amp plays, but click/cuts in and out. I only have 2 leads to provide amp, +/-, but the amp has V*/GND/V-, so 3 wire inputs. Any help is appreciated.
… update… The amp is DROK TDA8920 and step is DROK 150W boost module, Input DC 10-32V,Output 10-46V((adjustable, default 19V)
Hi, the max output of the module is 150W, but the amplifier need a 160W stable power source. so when click/cunt in and out. The amplifier need dc dual power supply, the recommended voltage is ± 20V- ± 25V, the power is over 200W. So the DROK 150W boost module is not meet the requirement.
Was trying to find any additional information on 110V controller I recently purchased from DROK, No wiring or instruction was received with the device. Your card with the device requested feedback. After trying to search your web site for additional information, you would not like my feedback. I would be more polite to say I won’t be doing business with you again. Regrets.
Dear buyer, thanks for you business and we are so sorry that we don’t have paper instructions for those DIY product but each product have descriptions on the website. Could you please tell us which product you purchased or what’s your order number? we will try our best to solve this problem. Thanks for your understanding and looking forward to your reply.
Best regards,
What is the input current required for DROK DC Buck Voltage Regulator Converter 17-35V 24V to 12V Regulated Power Supply Converter Module Waterproof 3A Car Volt Converters?
I need this data for my project.
hi, there is no limit to the maximum input current, the minimum input current is as if it can supply the output driver. If you have any other questions, don’t hesitate to write back to us.
Hi, i need the istruction in italian language…. is possible??
dear friend,
thank you for your message.
we are sorry we don’t have the instruction in Italian language.
hope you can understand.
have a nice day.
best regards
I purchased the following item from your Amazon store:
DROK® Multifunction Mega328 NPN/PNP Transistor Checker Capacitor ESR SCR/MOSFET LCD Display
The unit works but the screen is scratched and there is a dark spot on the screen in the upper right corner.
Hi, thanks for your business and sorry about the troubles. could you please send us photo, or maybe you can contact us for you order. please don’t worry, we will find a solution for you. Thanks!
I purchased the following item from your Amazon store:
DROK® Multifunction Mega328 NPN/PNP Transistor Checker Capacitor ESR SCR/MOSFET LCD Display
The unit works but the screen is scratched and there is a dark spot on the screen in the upper right corner.
Hi, thanks for your business and sorry about the troubles. could you please send us photo, or maybe you can contact us for you order. please don’t worry, we will find a solution for you. Thanks!
Hello, I have a need for a 50W power amp for my product. I would like to have a quote for the manufacture to fulfill my product needs.What is the scheduling involved and requirements per order?
Hi, are you talking this TPA3123/NE5532 Digital Amplifier? if not, please send us the product link and tell us how many you want to buy. BTW, do you live in the US? we will reply the scheduling and unit price according to your order. Looking forward to your reply. Thanks!
I purchased the following meter through amazon-DROK® 2 Wires DC 0-50A Digital Current Meter Blue LED Amp Meter+Amperage Shunt Resistance
Please advise proper wiring for it.
Thank you
Hi, sorry the the inconvenience caused. Below is the wiring instructions:
Please wiring the meter and your device as the diagram. If you have any troubles about the wiring, please send us your wiring photos and tell us more details.
Best regards,
DROK Service Team
Hello, I purchased a DC 24V to 12V step down regulator and was wondering what the light colors mean. Under normal operation they are blue, however they occasionally turn red.
Thank you
Hi Martin, thanks for the purchasing. Sorry that which product do you ask? Could you please give us the product link or your order number. Looking forward to your reply. Regards!
DROK® DC 24V to 12V CC CV Step Down Volts Regulator Constant Current/Voltage 8A DC Adjustable Buck Converter 7-40V To 1.2-35V LED Driver Charger Module with Charging Indicator Solar Power Supply DIY. The manufacturer part number shown is 090009||F with model number 090009_NEW.
Thank you
There is no wiring diagram for the mini amp I bought. This stopped my project dead in the water. X000qkmumv
Hi, we are sorry that we don’t have paper instruction for those DIY product, and all the information are on the website. Could you please tell us which product do you want to know. Maybe you can give us the product link or your order number. Also, please provide more details about your using environment and working statues. If you can, we sincerely hope that could you please send us a picture to let us check what is the problem detail? Looking forward to your reply. Regards!
I just bought a voltage regulator from Amazon: http://www.amazon.co.uk/DROK-Constant-Converter-Regulator-Interface/dp/B00T2L76FA/ref=sr_1_10?ie=UTF8&qid=1448472070&sr=8-10&keywords=drok+regulator.
it’s a nice product, but it would be useful to have some information about how to use it- either with the product, or available on the web site.
I found out how to set the voltage, but I don’t know how to set the current limit, and I don’t know what the three LED colours mean. At the moment, the green one is on most of the time and the blue one comes on occasionally.
Hi Mike, we are sorry that we don’t have paper instruction for those DIY product, and we have updated the website info but it cannot update the product page now. Please following the steps to set the current limit.
1. Adjust constant-voltage potentiometer to make output voltage reach the voltage value which you want.
2. Use 10A multimeter to measure short-circuit output current (directly connect two meters to output interface), at the samt time, adjust constant-voltage potentiometer to make output current reach preset over-current protection value.
And the about LEDs, red light is on in constant current status and off in constant voltage status, blue light is on when charging and off when full-charging and Green light is on when full-charged.
If you still have any other questions, please feel free to contact us.
Best regards,
DROK Service Team
Hello,
I just bought a:
DROK®Accurate Arduino Ultrasonic Distance Meassuring Sensor Module Precise ULtrsound Wave Distance Measurement Detector DC 5V Operating Voltage and I would like to view the data values of the distance mesured. Do you guys have like an app or something I could pair with to see how much distance is measured?
Thanks!
Dear friend,
Thank you for your information and Merry Christmas to you.
The distance measured range is 0~15 feet.
We are sorry to let you know that we don’t have any items can pair with it.
Hope this will help you.
Have a great day.
Best regards
Hi… I bought one Micro Stereo amplifier (http://www.amazon.com/gp/product/B010LRBGGS?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s01). It’s really good. Although, I found that in the picture shown in amazon, it displays it has a “mute switch” and a “power switch”, I would love to know what goes into those so I can improve my amplifier.
Hi, Gonzalo
“mute switch” means you can connect a switch to control it, once you press the switch, the sound will disappear at once.
“power switch” means you can add a switch to control it. press the switch to choose connect or disconnect the power supply.
Hope this will help you.
Best regards
Thanks… Can you help me find or help me how to look for a switch that could be placed in the board? I was searching and didn’t find anything I could place there.
Hi,
I bought DROK® Digital -55-125℃ Celsius Thermometer Small 0.36″ Red LED Panel Display.
I thought it is operating by battery but it came with two wires (red, black).
Can you please send me a instruction to connect it to power?
Hi Erik,
Glad to hear from you.
We feel sorry that we didn’t design a wiring instruction for this easy to install item.
There are just two wires, one red and the other is black.
Just connect the red one to the positive of power and connect the black wire to the negative of power.
If you have any other questions, please write back.
Best regards
Hey Drok Team,
I’m using the DROK® Bluetooth Remote Control Self-timer Wireless Camera Shutter for iPhone.
http://www.amazon.de/DROK-Bluetooth-Self-timer-Wireless-Smartphones-Schwarz/dp/B00RECQPR4
Since I changed my phone from iPhone 5 to 6s the remote control is not working anymote. Blue light on but doesn’t activate the phone to take a picture. Do you have any tips?
Thanks
Kind Regards
Monika
Hi Monika Mocha,
Glad to received your inquiry.
First，please turn off the bluetooth on iphone 5, as this remote control will automatically connect the bluetooth on iphone 5.
If iphone 6S has received the bluetooth signal, please cut off and then research bluetooth once more. To make it work for another phone, you have to make sure the former connection record has been removed.
If this can’t work, you can contact customer support from your order for refund or resend.
We will give every our customer best care.
Best regards
Hi, I have a Digital Multimeter AC 80-260V 100A Voltmeter Ammeter Power Energy Monitor Panel Meter Electricity Meter LCD Blue Backlight Display with Transformer CT. Can you send me the wiring diagram for the AC side please?
hi Tony,
could you please send email to service at droking dot com?
so we can offer the wiring diagram to you.
happy lunar new year,
best regards
I need wiring instructions for the Drok 0 to 100vdc 3.5to30v power white
Hello, Steve sandholm,
Could you pleases tell us your order ID or the ASIN of the product so that we can ensure what product you are referring to? Thanks
Purchased your DEOK doc 12v digital thermometer X000961E15
I would like to know where the sensor probe is???
It has a black wire 8″ long with plastic end – not sure what this is for? (As well as the obvious connecting black and red wires)
I purchased another digital thermometer from you a couple of months ago with a sensor probe attached to a length of cable (it worked once!) which now doesn’t work! So I was expecting the same probe with this device
Please advise
Hello Amanda,
The black wire with plastic end is the waterproof temperature sensor probe of this module.
The red wire is connected to the positive of power supply while the black wire is connected to the negative.
Could you please send us an email (service at droking dot com) to tell us your order ID or the ASIN of the another digital thermometer you purchased before and more details of how you operate it, such as the supply voltage, the wiring?
It is better that you can send us some photos of the installation together.
With your help, we can consult to our technician and find out a solution more effectively.
Best regards
Hello, I purchased 2 DC step-down module boards. (DIY LM2596) I am unable to get current through either board. I checked ohms on both sides. The positive is a closed circuit. The negative is open. I have turned the adjustment screw and nothing changes. Any suggestions? If you can’t resolve this, can I get these boards replaced? Or my money returned?
Hello Randy Jackson,
Thank you for purchasing.
Could you please tell us the ASIN of the product and more details of how you operate the product, such as the wiring, the input voltage/current, the working environment?
If you can, we sincerely hope that you can sent us some photos of the problem details.
Waiting for your reply.
Thanks
Input voltage is 13.64 and may get up 16vdc from a small solar panel in direct sunlight. There is a number R1C3 on the board. Not sure if that is the ASIN. I will try to attach a photo in a email to you.
Hello Randy Jackson,
Thank you for writing in.
The number on the board is not the ASIN of the product.
If you do not know the ASIN of the product, could you please tell us your order ID so that we can make sure which product you purchased?
Thanks
Hello,
I recently purchased a 7 Mode USB Monitor from you all through Amazon. I am suspect that it is working properly and the amp meter reads all over the place. When plugged into the wall it will be stable for a moment then fluctuates up and down erratically throughout a charge. I have seen others on You Tube that do not display this way therefore I question if this one is faulty. Before I go through the return process on Amazon I would like to reach out to you all. Any help would be appreciated!
Hello Peter,
Thank you for purchasing.
Could you please tell us your order ID or the ASIN of the product you purchased and more details about how you operate the product, such as the input voltage/current; the output voltage/current?
It is better that you can send us some photos of the problem details.
Waiting for your reply.
Thanks
I have recently purchased 2 different DC – DC Buck converters. I am using these to regulate voltage coming from a 12V 20AH battery to run a 12V LED light. The actual voltage coming off the battery is about 13.4V and the lights run too hot at this voltage. I have them running currently at about 11.8V
Both buck converters seem to work well. one is the Drok 3.5-30V to .8-29V 10A Step-down Volt Adjustable Output Voltage Regulator the other is the Drok DC-DC Voltage Buck Converter Volt Regulator 5V-30V to 0.8-29V Step-down Transformer Power Module 5A Constant Adjustable LED Dual Display (sorry no item numbers available)
Can you tell me if these are the items you would reccommend for the application or if you might suggest an alternative? preferences on the 2? I am also concerned that it appears that there are only about 6 of one and 10 of the other available on Amazon. i will need about 20 of the item selected. Hope you can help.
Hello Greg,
Thank you for your purchasing.
We are sorry that we cannot find out which is Drok 3.5-30V to .8-29V 10A Step-down Volt Adjustable Output Voltage Regulator. Could you please provide your order ID or the link of the product for us to ensure which product you are referring to?
Is this the other regulator?
DROK® DC-DC Voltage Buck Converter Volt Regulator 5V-30V to 0.8-29V Step-down Transformer Power Module 5A Constant Adjustable LED Dual Display Amp/Volt Ampere Ammeter Voltmeter Current Volt Tester
If yes, this is not suggested for you. Because when the battery is full charged, the voltage will be 13.8-14V, the input voltage is 1V higher than output voltage, this product is suitable for the application. But when the battery is discharged, the voltage will be reduced to 10.5-11V which will be less than the output voltage (12V), in this case, the product is not suitable.
Please note that the LED light need to be drived by constant current, therefore, the converter should be compatible with constant current.
Here is a suggestion for you:
DROK® DC/DC Automatic Boost Buck Converter Module 60W Constant Voltage/Current Car Voltage Regulator DC5-32V to 1.25-20V Adjustable Current Step Up&Step Down Voltage Converter for Solar Energy LED Driver Battery Charging
Hope this can help you.
Best regards
Hallo,Drok! Ich habe mir über Amazon 6 Stück 100 Volt ,10 Amper DC Mini Digital Voltmeter Volt Amp Meter LED Dual Display schicken lassen. Nach wenigen Malen Ein- und Ausschalten an 12 Volt Akkus, bzw. 12-Volt-Ladegerät sind schon drei Stück tot, nichts leuchtet mehr!!! Ich bin von Beruf gelernter Elektriker, Fernmeldemechaniker, Elektro/Elektronik- Ingenieur und seit ca. 65 Jahren intensiver Bastler auf diesem Gebiet. Ich habe auch eine Kurzschlussdiode mit falscher Polung gegen Spannungsspitzen eingebaut!!!!!!!!! Ich habe mit Sicherheit keinen Fehler gemacht!!!! Wer liefert mir Ersatz, der nicht kaputt geht im normalen Betrieb??? Ich habe zum Beispiel ein solches Instrument in mein Segelboot eingebaut, – für “Große Fahrt”! Unmöglich, wenn da andauernd das Instrument nichts mehr anzeigt! Dort muss ich ständig den Ladestrom kontrollieren! Ich kann nur vermuten, dass da irgendwo ein Konstruktionsfehler vorliegt. Sie sollten das umgehend überprüfen, ehe noch mehr Reklamationen kommen.
Ich bitte alsbald um Ihre Antwort und Stellungnahme. Mit freundlichen Grüßen, Raimund Bigalk.
Lieber Freund,
Vielen Dank für das Schreiben in. Wir schätzen Ihr Geschäft und so entschuldigen uns für die Probleme auf Sie verursacht.
Könnten Sie uns uns eine E-Mail an Service senden Sie bitte Ihre Auftragsnummer an droking dot com zu erzählen oder die ASIN des Produkts?
Es ist besser, dass Sie uns mehr Details zu sagen, wie Sie die Produkte, wie zum Beispiel die Eingangsspannung / Strom, der Verkabelung, die Arbeitsumgebung zu betreiben.
Wenn Sie können, wir hoffen, dass Sie uns ein paar Fotos schicken können uns die Problemdetails informieren.
Bitte um Vergebung und warten auf Ihre Antwort.
Freundliche Grüße
Dear friend,
Thank you for writing in. We appreciate your business and so sorry for any trouble caused on you.
Could you please send us an email to service at droking dot com to tell us your order ID or the ASIN of the product?
It is better that you can tell us more details of how you operate the products, such as the input voltage/current, the wiring, the working environment.
If you can, we sincerely hope that you can send us some photos to let us know the problem details.
Beg your forgiveness and waiting for your reply.
Best regards
Hello
I bought 60 of http://www.amazon.com/DROK-Voltage-Universal-Adaptors-Display/dp/B00DWXI6SA. I open 10 of them and they are all 15V output , not 12V. The 5V is fine, but 15 will burn all the devices I am going to use.
We really need 12V here on that output.
Hello Luis,
Thank you for purchasing.
Could you please tell us more details of how you operate the product, such as the input voltage/current, the wiring, the working environment.
If you can, we sincerely hope that you can send us an email(service at droking dot com) to send some pictures to let us check the problem details.
With your help, we can find a solution more quickly.
Best regards
hey
i bought 5
http://www.amazon.com/DROK-Regulator-Adjustable-Converter-Indicator/dp/B00HHQ0VP4
they work perfectly, but just have a mini question, i noticed it after plugin 2 loads in parallel
what does a red LED signal mean and blue LED signal mean.
does the red mean not enough current and i shouldn’t be loading the buck converter that much, or can i adjust the current?
Hello stewart,
The LED indicator is charging indicator.
The red means the battery is charging.
The blue means the battery is full charged.
Hope this can help you.
Best regards
HELLO,
AC 220V 3800W HIGH….ED CONTROLLER THERMOSTAT,
NEED WIRING DIAGRAM, NEED INSTRUCTIONS PLEASE
Hello JAMES LEGGE,
Thank you for writing in.
Could you please tell us your order ID or the link of the product?
With your help, we can find a solution more quickly.
Waiting for your reply.
Thanks
Hello James legge,
2 “DROK® AC 220V 3800W…” have shipped.
Details
Order #103-1251615-4137019
it was through Amazon want to use it as a thermostat control for 220 v need wiring diagram
Hello JAMES LEGGE,
Thank you for your reply.
Here the PDF file is the Datasheet of the product.
DATASHEET_090653
Hope this can help you.
Best regards
this don’t help any this all you can get
find anything else yet please
anything else yet still waiting
Hello JAMES LEGGE,
Thank you for writing in.
Sorry for the inconvenience caused on you.
There is a wiring diagram in the PDF file.
This product is applied to AC circuit, therefore no need to distinguish the positive terminal or the negative terminal.
You can series connect this product to the circuit.
Hope this can help you.
Best regards
I’m keen to buy one of your USB multimeters but am having difficulty finding a supplier who will ship to Australia.
Can you direct me to a suitable supplier?
David
Canberra, Australia
Dear friend,
Thank you for your interest in our product.
Could you please send us an email (service at droking dot com) to tell us the link of the product you are interested?
Thanks
looking for
GERI DC DC CONVERTER BUCK STIP DOWN MOUDULE 8-50V 48V 36V 24V 12V TO 5V 3A DUAL USB OUTPUT
PLEASE ADVISE YOUR PART NUMBER AND HOW I WOULD GO ABOUT ORDERING ON IT.
Hello kim riordan,
Thank you for your message.
GERI is not our brand.
Here is the similar product of our DROK (ASIN: B00KKICAWS )
DROK® DC DC 8-50V 12V/24V/36V to 5V 3A Buck Voltage Converter Type A Dual USB Adapter Connector with Ear Power Supply Module Waterproof
Feature:
Input Voltage: DC 8-50V
Output voltage: DC 5V
Output Current: 3A MAX, 2.5A long-term work
Output Power: 15W MAX
Output ripple peak: 100
Conversion rate: 85%
Epoxy Glue, waterproof, shock, moisture
Reverse polarity protection, overcurrent and overtemperature protection, automatic recovery after troubleshooting
Dimension: 46 * 32 * 18mm
Low pressure: 2V
Operating temperature: Industrial grade -25 °c – +65 °c (ambient temperature exceeds 40 °c, please reduce power, or enhance heat dissipation)
Full load temperature rise: 40 °c
Please Note:
No identification resistor, can not be used for Apple devices or the mobile phones with identification
Hope this can help you.
Best regards
hello
pls advise where i can buy this product ??
for shipment in France
DROK® Micro Load Tester Board USB DC 0-3A 3-20V
DROK® Micro Load Tester Board USB DC 0-3A 3-20V Adjustable Constant Current Electronic Load Equipment Module 12V Charging Current Capacity Monitor Aging Device Discharge Resistance with Fan
price for 2 pces
price for 100 pces
RGDS
MURIEL PERRINELLE
SPEED ELEC SAS
4 RUE DE LA CROIX VIGNERON
95160 MONTMORENCY
FRANCE
TEL 33 1 34 12 38 80
muriel@speedelec.fr
Hello MURIEL PERRINELLE,
Thank you for your interest in our product.
We are sorry that we cannot find out what is the first product that “DROK® Micro Load Tester Board USB DC 0-3A 3-20V”?
Could you please tell us the ASIN or the link of the product?
And is this the second product you need?
DROK® Micro Load Tester Board USB DC 0-3A 3-20V Adjustable Constant Current Electronic Load Equipment Module 12V Charging Current Capacity Monitor Aging Device Discharge Resistance with Fan
Please send us an email(service at droking dot com) to tell us more details.
Waiting for your reply.
Thanks
Hi Drok,
I have an application for a 12 volt DC Motor that I’d like to reverse via remote control. The supply voltage is also 12 volt. The 2 channel units you offer have the ampacity to do the job. One channel could operate for each direction. What is not clear to me is how to lock them out so that a simultaneous push of both buttons doesn’t short. What can you offer on that topic or otherwise suggest?
Hello Dick,
Thank you for writing in.
Could you please tell us your order ID or the link of the product?
With your help, we can find a solution more quickly.
Best regards
Part Number 090172 – In addition to the above, can this be set for “non-locking?”
I just purchased a DROK 2203 adjustable BUCK supply. Power input is specified at 22v to 15volt input. I did not not realize that my power supply is 24 volts and I need to step down to 4.5 volts. Can I still use it? Or do I need a different supply.
If I need a different supply can I exchange it? I bought it from amazon.com..
Hello Leo Horowitz,
Thank you for writing in.
Could you please tell us your order ID or the link of the product So that we can ensure which product you are referring to?
Thanks
I recently purchased one of your inexpensive 7V to 60V pulse width modulators on Amazon. I want to use it to cycle a fuel injector in a cleaning solution. It will turn the fuel injector on and off when I turn the dial, but it will not cycle the injector on and off. I have tried using a simple 9 volt battery and also a 12 volt booster pack. It behaves the same way with either power source. Does this mean that the PWM is faulty or am I doing something wrong.
Hello Greg,
Thank you for writing in.
Could you please tell us your order ID or the link of the product?
With your help, we can find a solution more quickly.
Best regards
Hello Greg,
Thank you for writing in.
Could you please tell us your order ID or the link of the product?
Best regards
http://www.amazon.com/DROK-Controller-Regulator-Modulator-Indicator/dp/B00DVGGWC0?ie=UTF8&psc=1&redirect=true&ref_=od_aui_detailpages02
Hopefully this will help you.
Hello Greg,
Thank you for your reply.
Could you please send us an email (service at droking dot com) with some images or video to let us check the problem detail?
Waiting for your reply.
Best regards
I tried to purchase some of the weekly clearance 5pcs Warm White USB Night light
Promo Code: E03B00U7 and the code does not work… Thoughts???
Hello Ron,
Thank you for writing in.
Have you added 5pcs of the night light to your cart?
If not, please add 5pcs of the night light to your cart then try the promo code again.
Hope this can help you.
If you have any questions, please feel free to contact us.
Best regards
I tried with another item and the promo code worked fine the one for the 5 pc did not The promotional code you entered cannot be applied to your purchase. was what I got….
Hello Ron,
Thank you for your reply.
Could you please send us an email(service at droking dot com) with some images of the Amazon Checkout page in purchasing?
With your help, we can find a solution more quickly.
Waiting for your reply.
Best regards
Hi,
Just received 2 off LTC187 DC boost boards. One board does not have a black heatsink (missing completely – not in bag) fitted over the conversion coil. (both silver heatsinks are fitted). Will I have to derate this device?
Hi Mike Dryer,
Thank you for writing in.
Could you please tell us your order ID or the link of the product you received?
It’s better that you can send us an email(service at droking dot com) with some images of the product to let us check the problem details.
Waiting for your reply.
Best regards
HI Drok,
I purchased a digital Voltmeter/Ammeter from Amazon (link attached), I connected the wires as instructed in the figure. For the input, I used a Drok Boost converter (link attached). The voltage on the boost (i.e., input to digital voltmeter) was set to 16V ( I checked with multimeter before connecting) and the current to minimum.
Once I connected the input, a diode (D1) popped.
I need this part for my device, I have already designed my enclosure based on it and I have had good experience with Drok. So I am going to order another from Amazon.
My concern is to prevent this from happening again. Do you have any suggestion as what might have gone wrong.
I noticed there are two calibration rotary knobs on the board which I do not believe could have been part of the problem.
V/A meter
https://www.amazon.ca/gp/product/B00GLKQOKI/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Boost Converter
https://www.amazon.ca/gp/product/B00E8D7XYG/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
Best regards,
Hi Pouya，
Could you please send us an email(service at droking dot com ) with some pictures or video to let us check the problem details?
With your help, we can find a solution more quickly.
Best regards
I am interested in purchasing Drok small amp and speakers. On Amazon there are two ways. One can buy parts separately or in a “bundle”.
Please cut and paste into url address box:
Separate speaker:
http://www.amazon.com/gp/product/B00C4MT274/ref=pd_luc_rh_bxgy_01_01_t_img_lh?ie=UTF8&psc=1
Bundled speaker
http://www.amazon.com/DROK-Portable-Amplifier-Regulator-Speakers/dp/B010FB89ME?ie=UTF8&psc=1&redirect=true&ref_=ox_sc_act_title_3&smid=AFHAE9RJVUMB
What is the difference between the separate speakers and the ones packaged in the bundle?
Sincerely,
Gary
Sorry first URL is wrong. The Separate Speaker is:
http://www.amazon.com/DROK-Speaker-Loudspeaker-External-Motorcycle/dp/B00LSF603M?ie=UTF8&psc=1&redirect=true&ref_=ox_sc_act_title_2&smid=AFHAE9RJVUMB
Hi Gary Graham,
Thank you for writing in.
The Separate Speaker is 2″ 4Ω 12W, here is the parameters of them:
Parameters:
Unit caliber size: 2 inches
Largest diameter: 53MM
Speaker opening size: 46MM
Screw diagonal distance: 60MM
Adjacent angles speaker: 43MM
Speaker height: 28mm
Impedance: 4 Ω
Undistorted power: 12W
Effective frequency: 118Hz-20KHz
Sensitivity: 88dB
Equivalent capacity: 0.8L
The speakers in the bundle is 3″ 4Ω 15W, here is the parameters of them:
Parameters:
Outer diameter: 78mm
Height: 52mm
Impedance: 4 Ω
Rated power: 15W
Sensitivity: 90dB
Equivalent capacity: 2.5L
Effective Frequency: 108Hz-20kHz
Hole diameter: 71mm
Hope this can help you.
Best regards
Thank you so much. Seems like the bundle is not only less expensive but better speakers.
One more question.
In the bundle there is a power adapter. But the board is a two position terminal strip 12v + and 12v – [I will call these the power terminals].
There seems to be a little adapter on the end of the power supply. Does this somehow or other either clip or screw on to the power terminals?
Hi Gary Graham,
Here is a picture instruction of the board in the bundle for you:
Hope this can help you.
Best regards
dear sir
good morning
i need an AC voltmeter Ammeter for 220 v and 100 amps. Do you have any dealer in pakistan?
If yes, please provide me his/her address and phone number.
Zeeshan
Lecturer
Pakistan
Hi Zeeshan,
Thank you for your interest in our product.
Could you please send us an email(service at droking dot com) to tell us the ASIN or the link of the product you need?
Waiting for your reply.
Best regards
I bought a DROK® Numerical Control Voltage Regulator DC 5-32V to 0-30V 5A Buck Converter, 24V 12V to 5V Step Down Power Converter Adjustable Digital Control Voltage Reducer with LED Ammeter Voltmeter Display. It was dead after 3 weeks. I only used like several time and now its not working. No display and very dimmed led and no voltage output. Is there an warranty?
Hi maximilian，
Thank you for writing in.
Did the product work when you got it?
Could you please tell us more details of how you operate the product, such as the input voltage/current, the wiring, the load, the working environment?
If you can, we sincerely hope that you can send us some images or video to let us check the problem details.
You can send this information to us by email (service at droking dot com).
Looking forward to hearing from you.
Best regards
I purchased the AC 0-199.9V meter. It has 4 wires, which wires are for powering the screen and which wires are for measuring the voltage?
Hello Spencer Sutton，
Could you please tell us your order ID or the link of the product so that we can ensure which product you are referring to?
Looking forward to hearing from you.
Best regards
http://www.amazon.com/DROK-Digital-Display-Voltmeter-0-199-9V/dp/B00M7UTX90/ref=sr_1_1?ie=UTF8&qid=1464887205&sr=8-1&keywords=ac+voltmeter+display
Hello Spencer Sutton,
Thank you for your reply.
The red wire is connected to power supply+;
The black wire is connected to power supply-;
The yellow wire is connected to measured voltage+;
The blue wire is connected to measured voltage-.
Hope this can help you.
Best regards
Dear DROK. we like your USB based digital display multi-meter products. do you have anything available with USB type-C connectors?
Hello john chen,
Thank you for your interest in our product.
Here is a recommendation of a load battery tester with USB type-C connectors:
DROK® DC 3-21V Load Battery Tester, 35W 3A Portable USB Monitor, Intelligent Constant Current Electric Discharge Resistance Power Resistor Kit for Power Bank Capacity Testing Support QC2.0/3.0
TECHNICAL PARAMETERS:
Voltage Range: DC 3-21V (compatible with quick charging such as the Qualcomm QC2.0, 5V/9V/12V/20V, Qualcomm QC3.0, BC 1.2, MTK-PE and Apple 2.4A etc.)
Current Range: 0-3A continuously adjustable (roughly adjust 0-3A by per 0.1A , precisely adjust by per 0.01A)
Accumulative Capacitance Range: 0-99999mAH
Accumulative Electric Energy Range: 0-999.99Wh
Power Range: 0-35W( the continuous discharging power is less than 35W)
Accumulative Time Counting: 0-1000h
Voltage Testing Deviation: 0.01V
Threshold of Smart Temperature Control: when the temperature﹥55℃（131℉), the fan would automatically work; when﹤45℃(113℉), the fan would automatically turn back off
Detector of Smart Temperature Control: premium NTC thermistor
Switching Regulator IC Frequency for Fan: 1.2MHZ
Power Supply Indicator: blue light when powering on
Fan Speed: 6000/min, 40×40×20mm
Controlling Chip: constant current chip
Radiator: 6063 aerospace aluminum radiator, 40×40×10mm
Adjustment Potentiometer: durable metal potentiometer
Discharging Power Tube: voltage-controlled low-impedance MOSFET (more stable constant current when is on high voltage, high temperature)
Operating Temperature: ﹣10 ~﹢65℃ (14-149℉)
Product Dimensions: 100mm×48mm×30mm
Hope this can help you.
Best regards
I just purchased a couple of your ac-dc 24v converters. While the output is marked + and – there appears to be no marking on the ac input. Does phasing matter with input voltage?
Hello John Scharres，
Thank you for writing in.
Could you please tell us your order ID or the link of the product?
With your help, we can find a solution more quickly.
Best regards
The Amazon order number was 107-4100990-9620258 and was for AC to DC converter 85 – 265v 50/60HZ AC to DC 24v adapter/industrial module switching power supply board.
Hi John Scharres,
Thank you for your reply.
AC input no need to distinguish + and -.
Here is an image that we think it is useful to you:
Hope this can help you.
Best regards
I would like to verify two part numbers. B00RUUSKS2 AND B01GFVHZUK. Is this in fact your manufacture part number? If these are not your part numbers, can you please provide the part numbers.
Thank you
Hi, B00RUUSKS2 and B01GFVHZUK are Amazon ASINs. The part number of B00RUUSKS2 is 090233, and the other one is 200151. Is there any else we can help with?
Hello,
I write from Italy!
We need to buy urgently 60 pieces of the follwing step-up
DROK® DC-DC 12V/24V Step-up Boost Converter Adjustable Output Voltage Stabilizer
Where you can buy it urgently?
Thank you
Regards
Paolo Callegaro
Hello Paolo Callegaro,
Thank you for writing in.
You can purchase the products from us directly.
Since many products are with similar titles, it is hard for us to ensure which product you are referring to.
Could you please send us an email (service at droking dot com) to tell us the link of the product?
Waiting for your reply.
Best regards
I purchased the 090030 from Amazon. I was expecting that some kind of a spec sheet to accompany the order. It did not. I don’t really like to search the forums to get information on the device. Please provide a user manual.
Hello Dale Reynolds,
Thank you for writing in.
Here the PDF file is the datasheet of the product, please check it.
DATASHEET_090030
Hope this can help you.
Best regards
Drop,
I want to purchase one of your digital ammeters/voltmeters to fit my Club Car golf carts. Mine is a 1999 model 48 volt. I have no idea as to which one to purchase or what else I need to make it work. What/which one do you suggest I use and what else do I need to make it work?
Thank you for your reply,
Jerry Simmons
Fsimmons1946@gmail.com
Hello Jerry Simmons,
Thank you for your interest in our product.
Could you please tell us more details of your application, such as the input voltage/current, the measuring current/voltage range, the measured device, the working environment?
With your help, we can recommend a more suitable product for your application.
Looking forward to hearing from you.
Best regards
What is the unit of measurement on this device for each item?
What would capacitance of 27.466 be?
Hello Adam,
Thank you for writing in.
Could you please tell us the ASIN or the send us the link of the product you are referring to?
With your help, we can find a solution more quickly.
Best regards
Dear DROK,
I have written yesterday here an inquiry, since the product I bought from you clearly didn’t work. I expected a feedback. Instead I can see my inquiry vanished from here.
Is that how you usually treat your customers?
Still hoping you will contact me over my email and we can clear this unpleasant case.
Sincerely,
Angel
Hello Angel,
Thank you for writing in.
So sorry that we cannot find out your message.
Could you please tell us your problem details again?
We will try our best to find a solution to you.
Beg your forgiveness and understanding.
Best regards
Hell Drok support,
Nice to hear from you.
Ok – one more time:
I have bought from you this device https://www.amazon.co.uk/gp/product/B00GX3YWNE and my intention was / is to step up from 5V to 12V.
So I read the enclosed instructions, provide 5.0V as input and I can see input / output voltage by pressing (in) / (out) buttons on the left side on the display. Initially the output voltage as shown by the display was 4.9V. So far so good.
Now I press the (set) button on the right and the number before decimal point starts to blink. However I cannot increase voltage above 4.9 nevertheless how many times I press the (+) button. I can however decrease to 0.0V and increase back to 3.9V the output.
To summarize I started with 4.9V output and ended up with 3.9V – both far below the expected from me 12V.
Please help, thanks.
You actually bought a step down, which lowers your voltage. What you need is a step up to boost it. What you need is this :
https://www.amazon.com/gp/product/B00UR5K4AE/ref=as_li_tl?tag=proeng-20&keywords=boost+converter
Hello Drok support,
I can see above my message describing the issue I have, however more than 24 later I cannot see your feedback on it?
Thanks!
Hello Drok support,
I am still waiting for your feedback on my issue above – almost a week after I received your useless piece of hardware.
Is there anybody who read this thread and I can answer my inquiry?
Thanks!
Hello Angel,
Thank you for writing in and so sorry for our late reply.
Since it is the vacation of Mid-Autumn Festival of China, we do not give you a reply at once.
The product in the product link you send to us is a buck converter.
But according to your description of the application, you need a boost converter not a buck converter.
Please check your order again that if the link you send to us is right or not.
Hope this can help you.
Best regards
Hello,
I buy a your product
DC-DC step-down 5A 12V / 24V a 5V
https://www.amazon.it/DROK-step-down-convertitore-alimentazione-regolabile/dp/B00GY01UMC/ref=sr_1_1?s=pc&ie=UTF8&qid=1480321502&sr=1-1&keywords=DROK%C2%AE+DC-DC+step-down+convertitore+di+tensione+5A+12V+%2F+24V+a+5V+di+alimentazione+Buck+regolabile+Modulo+Volt+Regolare+Meter
The product has the CE Declaration of Conformity?
I can have a copy of the conformity to see if I can use it in my application?
Many thanks
Hello sviluppo_ict,
Thank you for writing in.
The CE Declaration of Conformity is on the road.
We are trying our best to apply the CE certification but this process is complicate and needs a lot of time.
Sorry for the inconvenience caused on you.
Hope you can understand.
Best regards
Hi ,
I sent an email too Service@droking.com on november 24 and I still haven’t receive an answer. I want to order around 30 LCT1871 per year and it is not available anymore on amazon.ca. I wrote a question on amazon and I was told to contact you via email for this type of inquiery. Please answer my email.
Hello Jean-Gabriel,
Thank you for your interest in our product.
We have checked our email history that we cannot find your email.
Could you please try to send the email to us again?
Sorry for the inconvenience caused on you.
Best regards
I just sent it again, thank you
have receive this item this morning DROK® 12V to 5V Numerical Control Step Down Voltage Regulator 5A 5-32V to 0-30V DC Adjustable Digital Control Buck Power Converter NC Constant Volts / Amps Voltage Reducer, LED Ammeter Voltmeter
but the pronbleme is the device doesnt see the amp and wathever i do it just can give .9 amp (test with multimeter)
have try defferent power source with different volt and amp
Hello Nicolas Gervais,
Thank you for writing in.
And since there are many products with similar titles, it’s hard for us to ensure the product.
Could you please tell us your order ID or the link of product so we can ensure which product you received?
And it is better that you can tell us more details of your operation, such as the input voltage/current, the load, the wiring, the working environment.
If you can, we sincerely hope that you can send us some images or video to let us check the problem details.
With your help, we can find a solution more quickly.
Best regards
Hi folks! I bought this: https://www.amazon.com/gp/product/B00HHQ0VP4/ref=as_li_tl?tag=proeng-20&keywords=buck%2Bconverter&th=1
Quick question: my input voltage is 12v. I want to step down to 5v. No matter how I adjust the two pots, it never changes (output reading 12v).
Is there some trick to adjusting output voltage? Are there instructions anywhere on how to use this?
Hello Kris,
Thank you for writing in and sorry for the inconvenience caused on you.
Could you please try to counter clockwise adjust the output voltage potentiomenter for more than 10 laps until the value of the output voltage change?
And then you can adjust the output voltage potentionmeter to adjust the output voltage to your need.
Please note that when you adjust this potentiometer, you do not need to connect a load.
Hope this can help you.
If the output voltage still does not change, please feel free to write back to us.
Best regards
I have bought a few of your products and enjoy them very well they’ve done above and beyond what I need them for . But I’m looking for a step up from a low voltage (3-4v) to a constant 12-15v do you have a product like this if so email me a couple links please so I can get them order asap please and thank you for your great products and service
Hello Nick Grivois,
Thank you for your appreciation.
We are so glad that the product can meet your demand.
Could you please tell us more details of your need, such as the input current, the load, the working environment?
With this information, we can recommend a more suitable product to you.
Waiting for your reply.
Best regards
What do you need to do with the jumper on the back of the YH10063D power converter for it to accept the 8-16v?
Hello Brian Webb,
Thank you for writing in.
Since the “YH10063D” may be just a part number of one of the component, it is hard for us to ensure which product you are referring to.
Could you please tell us your order ID or the link of the product so we can ensure which product you are referring to?
With your help, we can find a solution more quickly.
Best regards
Hello, I ordered a DC 100 A ampere meter from Amazon, it does not work properly, the display does not stabilize properly and I can not read the indications of it,
Would you have an explanation for this problem?
I specify that I am looking for an ammeter that works for a battery, in charging or discharging mode, so that this ammeter must operate in positive or negative display,
Thank you for your feedback.
bonjour, je vous ai commandé un ampéremetre DC 100 A auprés d’Amazon, il ne fonctionne pas correctement, l’affichage ne se stabile pas correctement et je n’arrive pas a lire les indications de celui ci,
auriez vous une explication a ce probléme ?
je précise que je recherche un ampéremetre qui fonctionne pour une batterie, en mode charge ou décharge, il faut donc que cet ampéremetre fonctionne en affichage positif ou négatif,
merci de vos retours.
Hello ALAIN,
Thank you for writing in.
Could you please tell us your order ID or the link of the product so we can ensure which product you have purchased?
It is better that you can tell us more details of your operation, such as the input voltage/current, the load, the wiring, the working environment.
If you can, we sincerely hope that you can send us some images or video to let us check the problem details.
With your help, we can find a solution more quickly.
You can send this information to us via email(service at droking dot com).
Look forward to hearing from you.
Best regards
Hi,
I have one process where I need to measure a resistance of 100Ω ± 5%.
Did you have some ohm meter or something similar to a panel display that measures that range?
Hello,Joel Beltran
Thank you for writing in and interest in our product.
According to your description, we recommend this item that may meet your requirement.
You can search it from the attached link.
Hope this can help you.
Best Regard.
DROK 3 1/2 Digits AC/DC 8-12V Digital LCD Resistance Meter 0-200Ω Ohmmeter Ohm Gauge Panel Impedance Tester Detector
HI
Thank you!
I bought this product in amazon, https://www.amazon.com/DROK-External-Automotive-Adjustable-Consumption/dp/B017GZW0WW/ref=sr_1_40?m=AFHAE9RJVUMB&s=merchant-items&ie=UTF8&qid=1484095861&sr=1-40 , but it has no instructions, could send me an email with instructions.
I need a timer circuit, which fulfills the following function, I have a car with a diesel engine, to which I have made all the electricity myself, now I want to put a timer that when opening the key disconnect the loads, the coils of the relays Fans, air conditioner and cabin fan and that only 30 seconds after starting the engine connect them, that way we take care of starter, alternator, battery and motor. I found that circuit in amazon and I only lack the instructions to program it, but it does not bring them. Can you send them to me
Thank you.
Saludos
Yo he comprado este producto en amazon, pero no tiene instrucciones, podrían enviarme un email con las instrucciones.
Yo necesito un circuito temporizador, que cumpla la siguiente función, tengo un auto con un motor diesel, al cual le he hecho toda la electricidad yo mismo, ahora quiero ponerle un temporizador que al abrir el chucho desconecte las cargas, las bobinas de los relays de los electroventiladores, el aire acondicionado y el ventilador de cabina y que solo 30 segundos después de haber arrancado el motor los conecte, de ese modo cuidamos motor de arranque , alternador , batería y motor. Encontré ese circuito en amazon y solo me faltan las instrucciones para programarlo, pero no las trae. Pueden enviármelas
Gracias
Hello,Rodolfo Mendoza Montano
Thank you for writing in.
We appreciate your purchase and we are sorry for any inconveniences caused on you.
We will send the instruction to your email, please check it.
Best regards
Thank you for sending me the instructions .. They have been very efficient.
I have programmed in p3.2 op to 42 seconds, cl to 9.9.9 hours and lop —. Simply when opening the battery energizes the circuit and this relays the relay for 42 seconds, of them 12 the spark plugs and 30 motor on, then the relay is disconnected and this by NC connects the relay coils of air conditioners And cabin fan, protecting the starter, battery and alternator of these loads in conjunction with the starter
In addition to being told how long the car is on
Thank you very much
thanks for help
Hello Rodolfo Mendoza Montano,
Thank you for your reply.
We are glad that we can help with you.
If there is any more question, please feel free to contact us.
Best regards.
Dear DROK Team,
I need 34 digital voltage/current/power meters capable to (1) measure negative current and (2) trigger a relay at preset low voltage value. Do you have something suitable you could offer me.
Your Digital AC/DC Multimeter 4 Data Display Voltage Current Power Energy looks very nice but is it feasible to achieve (1) and (2).
Thank you.
Hello Yordan Dingilski,
Thank you for your interest in our product.
Since it is the vacation of China Spring Festival, our technicians are out of office so we cannot provide a recommendation to you until 4th, Feb.
Could you please wait a few days to 4th,Feb?
We will give you a reply as soon as possible.
Beg your understanding and forgiveness.
Best regards
Hello,
Thank you for your reply. I’ll wait till the end of the Spring Festival 🙂
Hello Yordan Dingilski,
We are sorry to keep you waiting.
To give you a suitable recommendation, could you please tell us more detail about other parameters? For example, the measuring range of voltage/current, etc.
And could you please send the link of the product “Digital AC/DC Multimeter 4 Data Display Voltage Current Power Energy” you mention?
It’s hard to confirm which product you mention, as there are many similar titles.
Beg your forgiveness and look forward to your reply soon.
Best regards.
Hello,
This is the product I meant:
https://www.amazon.co.uk/gp/product/B017NFJHTO/ref=as_li_tl?tag=proeng01-21&keywords=digital+multimeter
Something similar which is capable to (1) measure negative current and (2) trigger a relay at preset low voltage value would be great. The system I need it for is an off-grid PV system with charge controller which manages the battery charge process. As there are moments when the load power is less than the charging power I need it to measure negative current as well. Function (2) is necessary in order to disconnect additional loads at preset Low voltage value which corresponds to certain SOC (batteries State Of Charge).
The system maximum voltage is 35V. The maximum current is 45A.
Thanks.
Hello Yordan Dingilski,
Thank you for your reply.
We are sorry that the item you mention can’t achieve this two functions you mention.
And it’s a pity that we don’t have such a item can meet your demand.
Hope you can understand.
If there is any more question, please feel free to contact us.
Best regards.
Hi,
i have one of these:
https://www.amazon.co.uk/Regulator-Voltmeter-Adjustable-Stabilizer-Experimental/dp/B00GX3YWNE/ref=cm_cr_arp_d_product_top?ie=UTF8
(LM2596 board)
The voltage seems to spike very high when switching on for a small time. I have fried a few LEDs like this, is this normal behavior? I’m stepping down from 24v to around 3v
Hello Stuart,
Thank you for writing in.
We are sorry to hear that.
But there are something you may ignore.
LED is drived by constant current, but the LM2596 board can only offer constant voltage.
So it isn’t suitable to connect LED.
Hope this can help you.
Best regards
Greetings Drok,
I recently purchase from Amazon the DROK DC 3-21V Load Battery Tester, 35W 3A Portable USB Monitor. Every port on this product functions as designed except the iPhone 5S port. What is your procedure for returning this product for repair or exchanged.
On another note, this is one of the BEST products I have purchased for my personal electronic shack – I also purchased the Numerical Control Voltage Regulator DC 6-55V to 0-50V 2A Buck Converter Module and the DC 0-120V 0-100A Digital Multimeter Charge-Discharge Battery Tester. The quality and functionality in each of these products is GREAT!
I will not stop only with these products purchased.
Thank You.
Best Regards.
Dear friend,
Thanks for your message.
We sincerely appreciate your purchase and support.
We are sorry that this item can’t meet your demand.
If it can’t work for you, could you please contact Amazon service to return it?(Because your order is sold by DROK and fulfilled by Amazon.)
And we are so glad to do business with you.
Hope we can service you again.
Best regards
Hii, i am looking for a dc to dc boost voltage converter with a peak output voltage of 120V , can you guide me to a product you might have ?
Hello Sarath,
Thanks for writing in.
We appreciate your interest on our product.
We have many kinds of converter, but so far we are sorry we don’t have one that can output 120v.
Beg your forgiveness.
We are striving to improve our item and service.
Look forward to more cooperation in the future.
Best regards.
Hello. I integrate your converter (DEOK DC Convertisseur de Tension 12V/24V to 48V Régulateur Boost Chargeur de Voiture Réglementé Alimentation DIY 10-32V à 36-60V) into a solution which I market and I wish to know if you plan to maintain his its marketing or if I shall have to make stocks. Beforehand thank you.
Hello Jean-Claude Arroyas，
Thanks for your writing in.
So far this item is in good sale, We will maintain its marketing.
But we can’t also promise anything，after all, we cann’t forecast what will happen in the future.
Beg your forgiveness and hope you can understand.
Best regards
Hi Drok,
Looking for your Drok DC/DC Converter 12/24V Input, and 5V10A Max Output….. needing a price for 20-30 quantity.
This is an URGENT request. Please contact us if necessary 1-480-388-9971. Much appreciated, Carmen
Hello Sun-Chlor,
Thanks for writing in.
We are glad to receive your inquiry.
Could you please contact us by Service at droking.com(please replace at with @).
Best regards.
Do you make a PWM controller with a constant voltage output (12V) but with an adjustable current limiter? I would like to maintain 12V but be able to adjust the current available from about 8 amps down to .25 amps or so.
Hello Clay,
Thank you for your writing in.
We are sorry most of our PWM controllers can’t maintain constant voltage.
We will reflect this to our technician and try to improve our item to give you a best service.
Look forwards to more cooperation in the future.
Best regards.
Hi DROK,
I Looked at the dc-dc converter on amazon store (https://www.amazon.it/Convertitore-regolabile-efficienza-alimentatore-stabilizzato/dp/B00H09HO2Q/ref=sr_1_41?s=electronics&ie=UTF8&qid=1488541716&sr=1-41), but I would like to buy prodctodc.com (http://www.prodctodc.com/dc-adjustable-buck-voltage-regulator-8a-100w-adjustable-dc-step-down-convert-battery-buck-3351224v-power-supply-p-249.html#.WLlOzVfD1hE), the product cod. are same.
I noticed That the components in the image are differents.
The products are same?
Best regards.
Nicola
Hello Nicola,
Thank you for your writing in.
According to the description on prodctodc.com, it looks like the item is the same as our item.
However, as this item is not from us, we can’t get further information about it. Therefor we are sorry we can’t promise they are completely the same.
Beg your forgiveness and hope you can understand.
Best regards.
Hola donde podría adquirir una caja de preinstalacion para multimetro digital data 4 DisplayPort?.. Gracias
Querido amigo,
Gracias por escribir.
¿Podría usted por favor haganoslo saber que tema que mencionas?
Hay muchos títulos similares para nuestro tema, lo sentimos no podemos confirmar el tema.
¿Podría, por favor, envienos la referencia del tema?
Saludos.
Dear friend,
Thank you for writing in.
Could you please let us know which item you mention?
There are many similar titles for our item, we are sorry we can’t confirm the item.
Could you please send us the link of item?
Best regards.
Hola que tal muy buenas tardes
Soy Mauricio Cruz de Mexico solicitando informes de cotizacion y distribuidor en Mexico del siguiente articulo el cual necesitamos en nuestra compañia y lo encontramos en AMAZON
DROK® Salida a prueba de agua adjustable Regulador de voltaje DC Buck Convertidor 8 – 22V al transformador 1 – 15V 5V 12V 3A Fuente de alimentacion Step-down Junta Modulo Volt para el coche auto Motor Vehicle Regulado SR
Requiero 10 piezas inicialmente
Agradezco su atencion y quedo a la espera de su respuesta
Buenos días Mauricio Cruz Valdez,
Gracias por escribir.
¿Podría contactarnos por medio del servicio # droking dot com (por favor, reemplace # con @)?
Además, hay demasiados títulos similares para el artículo, no podemos cerciorarnos del artículo que usted menciona.
Si puede, por favor envíe el enlace del producto a nuestro correo electrónico.
Espero su respuesta.
Atentamente.
Hello Mauricio Cruz Valdez,
Thank you for writing in.
Would you please contact us through service#droking dot com ( please replace # with @) ?
In addition, there are too many similar titles for item, we can’t make sure the item you mention.
If you can, please send the link of product to our email.
Look forward to your reply.
Best regards.
People complained about the startup sound, and connection tones. Have these been removed from the latest mini amps you are selling on Amazon?
DROK® Mini Stereo Audio Wireless Bluetooth Amplifier Digital Signal Power AMP Electrical Portable DIY 30W*2 Two Channel Amplifier Board Module Aluminum Body with UK Power Adapter for Speaker Auto Car Motorcycle Tablet PC Smartphone TV Iphone iPad iPod Laptops with Bluetooth (Blue)
OR, do these still have the annoying start up sound?
There is also this version:
Yeeco Hifi Mini Bluetooth Amplifier 50W+50W DC 9-24V Dual Channel Wireless Bluetooth Stereo Audio Receiver Power Amp Ampli Board with UK Power Supply Adapter for Home Sound Audio System Computer Laptop (Red)
has this 50w version had the start up music and connection music removed??
thanks
Hello j,
Thank you for writing in.
Is this item you mention?
https://www.amazon.co.uk/Bluetooth-Amplifier-Electrical-Motorcycle-Smartphone/dp/B014J0TUR0/ref=sr_1_1?ie=UTF8&qid=1493372703&sr=8-1&keywords=DROK%C2%AE+Mini+Stereo+Audio+Wireless+Bluetooth+Amplifier+Digital+Signal+Power
We are sorry the sound can be cancelled unless custom product.
As for the second item, it seems it is not from us.
Therefore we are not familiar with it. Hope you can understand.
Best regards.
I recently purchased 2 voltage boosters from your company, and unfortunately when I connected a digital voltage reader to the output terminals, and turned the potentiometer that regulates output voltage, there was no change in the output voltage. The same problem was observed on both boosters. I’m not sure what to do now as I need them for a project that will be competing in a few days.
Hello Brian,
Thank you for writing in.
To find out solution for you, would you please tell us which voltage boosters you are mentioning?
Just send us the link or ASIN. And please tell us more details about your operaton, for example input voltage/current, wiring, working environment and etc.
It would be appreciated if you can take some pictures or a testing video to show your problem.
You can send them to service#droking dot com ( please replace # with @). There we can contact with you in time.
Look forward to your reply.
Best regards.
DROK,
Fantastic website/product lines ! Brilliant feedback loop for improving products as well !!!
Does your “DROK AC 100-300V 100A Digital Voltage Current Multimeter LCD Volt Amp Meter Gauge Panel Tester Voltage Amperage Dual Display Power Monitor” work with any low cost dataloggers ?
How would you suggest I use your products with a low cost data logger like this product [web page link removed]
So customers can review , analyse, chart the data that is outputted… Big opportunity for customers who want to monitor and control electrical loads.
Thanks You !
Hello Mark Miller,
Thanks for writing in.
We are sorry the meter you mention doesn’t have interface for data transmission.
Therefore it can’t be use with data logger. Hope you can understand.
Best regards.
Hello Drok.
I have recently purchased a digital thermometer with 3 metre probe from you. I am very pleased with it. However, it is only a stopgap solution. The device is to monitor the temperature of the water in our hot water cylinder (censor on exterior of cylinder)
We heat our water via a wood burner with back boiler in winter, and solar via immersion heater in summer. Without a thermometer we have no way of monitoring the water temperature. The 3 metre cable only gets from the cylinder to our upstairs landing, we really need to be able to view the readout downstairs. Can the cable be extended? Or, is there wireless devise we could use, if the latter, the sender would need to be permanently switched on, and the readout to be to a decimal point.
Keith.
Hello keith dungworth,
Thank you for writing in.
We can’t ensure the item you mention.
Would you please tell us the ASIN or send us the link for confirmation?
Look forward to your reply.
Best regards.
I just purchased a 300473 from Amazon. I need a wiring diagram for the product. Wouldn’t of purchased it if i would have know the terminals were not labeled and that it didn’t come with instructions.
Hello Christian Sturtz,
We are sorry for inconvenience caused you.
And thank you for bring this issue to our attention. We will reflect this to our team and make some improvements.
Here is the diagram and instruction.
300473 PDF
Best regards.
Hi, can you repost this pdf please!
Hello Nick P，
Thanks for writing in.
We found your question in other post, so we have attached instruction there, please check it.
Any more questions, please feel free to contact us.
Best regards.
Hello,
I have a question about your AC/DC multimeter:
I have a 24 V motor supplyed with a 24V alimentation. The maximum current of the motor is about 1 A.
I would like to measure the current who need the motor.
In your Amazon store, I found a multimeter who can measure currents up to 15 A.
I would like to supply the multimeter with the 24V alimentation that we use for the motor.
So, is this multimeter compatible with this power supply?
thank you,
Best regards
Hello Jonathan,
Thanks for writing in.
To give you an accurate answer, would you please send us the link for confirmation?
Best regards.
Hello,
Below the product link:
https://www.amazon.fr/Amp%C3%A8rem%C3%A8tre-d%C3%A9lectricit%C3%A9-Thermom%C3%A8tre-temporisation-Surveillance/dp/B01N7LWZMX
Best regards
Hello Jonathan,
Thank you for writing in.
Power supply range for this item can be 4-30V, so 24V power supply is suitable.
Best regards
Have just purchased several your usb voltage testers.
I would like to request some of your Logo Stikers to place on other pieces that I own.
I destroyed the one that was on the box of the 7 modes multi, while trying to remove it .
purchased from seller @ Amazon
Thank you
Hello Buck Maddrey,
We are sorry we don’t have logo stiker on Amazon warehouse.Hope you can understand.
Would you mind making a simple stiker by yourself?
Best regards.
I bought a 25w buck boost (3A). The Vin should be 3-15v. I have use Vin = 12v and the unit work ok. However, 2 scenarios in which Vin = 5v is used: with Vin=5v and load is connected, the output shows 0v no matter which direction the voltage adjust. With Vin=5v and no load, I can see voltage change with the adjustment. As soon as load is connected, the output read 0.
Vin=3v will only show 0v in either scenario.
Can you please advice before the return period expire.
Also can you share the Vout calculation/formula.
Thank you.
Order # 114-3313842-0045813
Hello Tam Nguyen,
Thanks for writing in and we are sorry for what happened.
Do you use the same load when the input voltage vary?
Would you please take some pictures or video to let us check the problem details?
You can send information to our serive email: service@droking.com.
We will show it to our technicians and find solution for you as soon as possible.
Best regards.
I had send photos with explanation to service@drokiing.com. thanks.
I don’t know the regulator ic used in this converter, but wanting to know the value of the voltage dividers: potentiometer and a fix resistor. Along with these, what is the equation to calculate voltage output. I appreciate if you could share the information. Thank you.
Hi there,
I have question concerning the buck/boost converter.
1. What is the value (ohm) of the trim pot (voltage change)?
2. What is the default state of on/off switch at output?
3. Will the unit output be switch to “on” every time the converter turn on? Can it remember the setting?
ASIN: B00GZHEPW6
Manufacturer ref number: 090638
Hello Tam Nguyen,
The ohm value of trim pot is 20k. The default state of output mode is off.
This item has Memory Mode. Long press S1key for 3 seconds, the module automatically remembers the current work status as the default power-on state.
Hope this can help you.
Best regards.
Audio amp PAM 8403 : Tied 5vdc, condenser mic, and two ear buds to unit. The volume control works fine on the hum from body contact to input, but audio input from mic is zero. Any suggestions? (power polarity is correct, and ear buds connected before 5vdc.)
see above
Hello Bill Schmitz，
Thanks for writing in.
We can’t ensure the item with limited information. Would you please tell us the ASIN number or send us the product link?
Best regards.
I am looking for a device to go from 12vdc to 9vac do you sell anything that would work for this
Hello Robert Rizzardi,
Thanks for writing in.
Do you need a buck converter? What is your other requirements?
Best regards.
DROK DC8-63V Digital Battery Capacity Tester Indicator, Two Wires 12V/24V/36V/48V Lead Acid Battery Monitor with Protective Shell Green LCD Display, lost instructions what is the code for 36 volt lead golf cart batteries?
Thanks
Hi Atlee raber，
Thanks for writing in.
Do you mean this item?200232
Here is a link to PDF instruction. The code for 36V lead-acid battery is 3P.
https://images-na.ssl-images-amazon.com/images/I/81gsqt2ruIL.pdf
Best regards.
Hey thanks Guys
I am looking for 15amp or higher 12-48 input 0-30v output 0-max amp adjustable output regulator.
Hello Brandy,
Do you need a buck converter? would you please let us know what doesn “0-max” means?
Best regards.
How do i save and restore settings on the MPPT ? ?
SKU200322
I cant seem to get them to stay.
Hello marko,
Thanks for writing in.
Have you contacted us via service email, we have received the same question by email. And we have replied to it.
Best regards.
Hi my name is Andy
I have the 6 in 1meter I hooked it up and on the display screen I have input voltage
The power factor and the Hz
I’m not get any reading on watts
Energy and kWh
I connected the CT to it can u tell why I’m not getting any reading
Hello Andy Hodge，
Thanks for writing in.
With less information, we can’t ensure the meter you mean. would you please firstly send us the product link or ASIN number for confirmation?
Best regards.
And just to let u know my meter came without the external CT shunt so I had a P1 pzct-02 100A (1000/1) 0.5 oms 10 oms is that ok or not let me know please
Hello Andy Hodge,
As we can’t ensure the item you mention, we are unable to give accurate answer.
Would you please send us the product link or ASIN?
Best regards.
iam looking for a transformer with a 240 vac input a 48 volt dc output at 300 amps do u carry something like this
Hello john brooks,
So far we don’t have such item with 300amps output current.
Best regards.
Hi, is this product authorized by Drok? It looks almost identical to yours.
https://www.amazon.com/RainbowTek-Multimeter-Charging-Temperature-Voltmeter/dp/B077VS88QJ/ref=sr_1_8?ie=UTF8&qid=1516647032&sr=8-8&keywords=usb+c+multimeter
Hello Ben Samuel,
We don’t authorize this seller. That is plagiarized from us.
Thanks for your information.We will take action later.
Best regards.
Drok,
Hi there. I am interesting in buying your 150W DC-DC Boost Converter, seen here:
https://www.amazon.ca/DROK-Transformer-Controller-Stabilizer-Automotive/dp/B019SYX7BM/ref=pd_sim_328_8?_encoding=UTF8&refRID=7Q7KASWPS50G3M1WMAKS&th=1
However, I noticed that its maximum power output is actually only 90W, not 150W, unless “dissipation” is “enhanced”.
I am wondering how i can enhance the heat dissipation to use the board in the following setup:
Input: 12V,
Output: ~30V at a maximum of 3A.
Given the input of 12V, i should be dissipating 12*10, or 120W maximum. Thus, i need to enahcne the heating.
Should i remove the heatsinks that come with the board and add bigger ones? Or should i leave them but blow air over the board with a fan? Is there any way to know how much of an enhancement is needed, or if the air from a fan will be enough?
Thank you for your time and help,
-Ty Tonus-Burman.
Hello Ty,
Thanks for writing in.
You need to add a cooling fan to enhance heat dissipation. There is a “FAN+” terminal near to input termianl.
Best regards.
Drok Panel Meter – 4 display – Voltage, Current, Power, Wh… UK Amazon B015GQOLU2 … Taking large current from 220VAC supply (short spikes > 3A!!). Measured with Tektronix AC Current Probe. Can something be added to the power meter’s AC input to prevent this (L or C? – 1R resistor has no effect (and lowers voltage reading due to large spikes of current still drawn through it). This Power Meter is to be used in a TRIAC dimmer product, but it’s not yet passing initial checks at 220V. Testing at V < 220VAC (TRIAC dimmer) caused the screen to go BLACK and the unit to overheat. Minimum voltage is advertised at 80V, but this screen blackening has been noted at 80VAC < V < 220VAC!! Can you advise a workaround so the meter can be incorporated in this project (at least for the spikes of current)? Is this unit compatible with TRIAC dimmers?
Hello Rich Webster,
Thanks for your writing in.
We are sorry we have no way to reduce spikes current. Does the spikes current occur when connect TRIAC dimmer? If spikes current is eliminated, dimmer may not be able to work normaly, we suggest not to do that.
About the second question, would you please let us know more details? Does the meter overheat and get black when measuring voltage is within 80-220V AC?
Best regards.
Hello, I purchased your BLDC controller:
Brushless Sensored Motor Control Board Motor Driver Regulator Controller DC 5~36V 16A 350W BLDC Motor Controller/Control Switch/Speed Controller
The board I recieved is a little different than the one in the picture. Mine does not have the 5 ping connector where the external potentiometer plugs in only a 3 pin. can you tell me what pin is the speed out?
thanks!
Hello Pechan,
Thank you for writing in.
Could you please tell us your order ID or the link of the product you purchased?
If you can, we sincerely hope that you can send us a picture of the product you received.
With your help, we can find a solution more quickly.
Look forward to hearing from you.
Best regards
https://www.amazon.com/gp/product/B075276F9B/ref=oh_aui_detailpage_o02_s01?ie=UTF8&psc=1
That is the link of where I bought the board. Here is a picture of the board I received.
https://drive.google.com/open?id=1mVVMGG1Mt9c-l8mM6WdvBQ2PD0vI80S-
Dear Pechan,
Since it was the Chinese Spring Festival, we are sorry for delayed response.
We can’t check the picture. When click on the link, we need to login in.
Would you please send pricture to service@droking.com?
Best regards.
hI
Recently purchased an AC Digital Voltage & Current Meter model D85-2042AG on Amazon.ca. I overlooked that it. is for 50HZ systems. Do you have a model for 60 HZ
Hello Paul Kelly,
Thanks for writing in.
Is it this item? https://www.amazon.com/dp/B06XXBDCY9?th=1. Our technicians said it is available for 60hz.
Best regards.
I bought this [https://www.amazon.com/gp/product/B06VYDNBHR] but one of the 3 interfaces (the one that contain the amount of mAh) is in Chinese. How can I switch it to English?
Hello Mohammad,
This item can display Chinese or English. The interface you see should be Chinese inteface,which can’t be switch to English.
Best regards.
So far with everything I purchased from you, it has been of the utmost highest quality for the price range. I have bought four of the 4 ohm 40 watt full range speakers, and a 180w amp. With all this together, I have extreme bass and also high quality sound. The only thing I wish is that the subs were meant to hit lower Hertz… if you could find a way to hit lower and yet keep dBs High, I would buy everything from you. I would buy your company. Just joking, but everything you make is well worth the money. Shout out you you guys! Best people EVER! I’m 15, and I’ve had a few experiences with garbage audio equipment. But after putting those four in a t line box specifically made for them, I can say it’s the best sounding audio ever. Just what I needed, I can put it in the truck or car and it sounds good, I can have it in my room for music or gaming, still sounds good, or take it over to her friend’s house and impress them! You guys have kick-started my own business! I seriously can’t thank you guys enough! I’m taking in those stacks of you guys! I have the absolute upmost respect for you guys! THNX!
Dear Seth Hardin,
Thanks a lot for sharing you experience here.
We’re glad our products can satisfy you. That is a great encouragement for us.
Best regards.
Hi,
Please can you help?
I have a Drok “160W NC Power Supply Module DC 6 ~
40.00V to 0 ~ 32.00V 5.1A Adjustable Buck Voltage Regulator DC 12V 24V Adapter
/ LED Driver Module” I have broken the nylon feet.
I have been searching the internet and cannot find
the same feet anywhere, please can you tell me where I can buy these feet from?
Kind regards Barry
Hello Barry Greengrass,
Thanks for writing in.
It’s hard to confirm the item with this title. Would you please send us the product link?
Best regards.
Hi
I need DROK 0.36″ 5 Digits DC Voltmeter Panel Mounting Meter 0-33.000V 12V/24V Voltage Monitor Tester Volt Gauge with Green LED Display –06 NOS.
Please confirm form where I can procure the same in India.
My address details are as below.
Thanks & Regards
Anupriya Rence l AVL Technical Centre Pvt. Ltd.
376-377, Udyog Vihar Phase – IV, Haryana – 122015
Land Line: +91 (0)124 4090300, Extn. – 402
Hello Anupriya Rence,
Thanks for writing in.
Is it this product? 100035
We are sorry we don’t have seller in India. If it is convenient to purchase from Amazon, you can order directly from us. We will ship item from China.
For more details, please kindly contact us via service@droking.com
Best regards.
Hi,
I’m considering the purchase of several “DROK USB Load Tester & USB multimeter” electronic loads from your Amazon store to support our QA department. On the Amazon product page there’s a description of the product that indicates it will work with Qualcomm Quick Charge compliant USB power supplies.
My question is, how does the DROCK load tester work when connected to a quick charge compliant USB power supply and a regular USB power supply that only provides 5V output?
Does it hand shake over the D+, D- lines to the connected power supply that allows it to know when the power supply supports?
Will the Load Tester work with DCP only USB power supplies?
Thanks for the help.
Best regards,
Chris.
Hello Chris,
Thanks for writing in.
Since we have many kinds of load testers, could you please kindly send us the produdct link or ASIN numbe for confirmation?
Bst regards.
Hi Dork Team, where I’ll get DROK 4-20mA Signal Generator, DC 12-30V Constant Current Source, Stable Signal Source with 0.01mA Adjustable Potentiometer, Voltage, Current LED Display
In Singapore?
Regards
Anam
Hello Anam,
Thanks for writing in.
It’s regretted we don’t sell items in singapore. You can order on Amazon or from us directly.
For more order details, please kindly contact us through service email(service @droking.com)
Best regards.
Hi Again,
Here’s the load testing that I’m interested in:
https://www.amazon.com/DROK-Portable-Intelligent-Discharge-Resistance/dp/B01FHBSTYU/ref=sr_1_4?m=AFHAE9RJVUMB&s=merchant-items&ie=UTF8&qid=1519858913&sr=1-4
I read my original post again and it seems my question is a bit unclear. Let me try it again…
I would like to use the load tester in the above link to Amazon to do the following:
1) To test a battery powered USB output port that supports Quick Charge 2.0 devices like cellphones for example.
2) To test the same battery power USB output port in normal mode or meaning that the connected load is not a Quick Charge type, just a regular USB device.
My hope is that the load test in the above link can be used to test this USB output port in both modes of operation. If the load tester can do both, how do I control it so that it will load for one mode or the other?
Thanks and best regards,
Chris.
Hello Chris，
If your device has quick charge protocol,our item will automatically choose quick charge mode.
There is no way to switch between two modes.
Best regards.
On the DROK Signal Generator, amazon# B071NLGP6L, I need to know where, on the terminal board to put the wires for the input 24vdc supply and also where to put the output wires for the 4-20ma signal. I am assuming that the input 24vdc supply is connecting to the first 2 pins labelled 24v and 0v, and the output 4-20ma wires are connected to the 3rd and 4th pins labelled 0v and 0-20ma. Is this correct?
Hello David，
Thanks for writing in.
Yes,”24V” and 0V terminals are for input power;the other “0V” is port,4-20ma for current signal output and 0-10V is for voltage signal output.
Best regards.
Greetings Drok,
Is there an operating/installation manual pertaining to the Drok DROK Digital DC Multimeter 0-90V 0-100A Voltmeter Ammeter Power Capacity Time Meter Monitor, Charge-Discharge Battery Tester, Volt/Amp/Watt/Ah Meter Tester, LCD Color Screen with 20mm Hall Sensor?
I own several Drok products and I am very satisfied with Drok’s products performance; however, when it comes to product’s operating manuals there is no emphasis.
Is there a place withing the Drok’s website a customer can search for operating manuals, product wiring strategy, and component specification, i.e., for the 20mm Hall Sensor.
Thank you for reading the above concern.
Cordially,
Rolando
Hello Roland Govantes，
Is it this item? 200219
We have uploaded pdf instruction on Amazon product page. Here is the link to it. https://images-na.ssl-images-amazon.com/images/I/C1CRWo45BGS.pdf
Hope it can help you.
Best regards.
Hello Luke Lovatt,
Thanks for writing in.
Would you please let us know if it is this one? 110011
Best regards.
Hello, Luke Lovatt,
Operating voltage for this item is Dual AC 12V, so please make sure this input parameter is correct.
Best regards.
Dear,
looking for a pannel mount AC power meter with Power factor / A / V / W meter.
Kind regards,
Jan Willem Meijer
Hello jW Meijer,
Thanks for your inquiry.
We are sorry so far we don’t have ac meter with power factor.
Best regards.
Hello,
I am interested in increasing the length of the wires from my 2 in 1 voltmeter (Item # 100174) and i am not sure what type of plugs are used. Do you have a spec of what crimp connectors are needed for both plugs?
Thank you for your time.
Hello Joe Rivas,
The spec is 2.54mm pitch.
Best regards.
Hello,
I cannot find a datasheet for what the 4 pins do on the DROK 090485. Do you have a datasheet you could please send me?
Dear Ray E,
We are sorry for inconvenienc caused on you.
As this is a semi-manufactured module, it doesn’t have paper instruction.
Actually, the connection is easy. The two pins near “IN ” is for input. USB terminal is output. The other two pins near to “KEY” is for power on/off, you can connect a switch there.
Any more questions, please let us know.
Best regards.
I have just purchased following product
where can I find a manual explaining the display module the written instructions included are lacking
for example when I set the LVP and then ran the battery down to below this voltage, the unit did not shut off the load. Isn’t it supposed to?
thanks,
Dave
DROK DC 0-120V 0-100A Digital Multimeter Charge-Discharge Battery Tester, Volt Meter/Ammeter/Watt Meter/Time/Capacity/Electricity Usage Monitor, LCD Color Screen with Overvoltage Protection
Dear David Beals,
Thanks for writing in. We think you should mean this item.
200193
Only when connect a relay, NCP,OCP,LVP and OVP these four functions are available.
Best regards.
Hi,
Please can you help?
I have a Drok “160W NC Power Supply Module DC 6 ~40.00V to 0 ~ 32.00V 5.1A Adjustable Buck Voltage Regulator DC 12V 24V Adapter/ LED Driver Module”
Product link https://de.aliexpress.com/item/160W-NC-Power-Supply-Module-DC-6-40-00V-to-0-32-00V-5-1A-Adjustable/32767139437.html?spm=a2g0s.9042311.0.0.yt2Uhw
I have broken the nylon feet. I have been searching the internet and cannot findthe same feet anywhere, please can you tell me where I can buy these feet from?
Kind regards Barry
Hello Barry Greengrass,
As the image showed, is that part? http://droking.com/cs/wp-content/uploads/2018/03/360截图20180323165030690.jpg
This item may not be easy to be found from internet.You can try to find other replacement.
Best regards.
I have purchased boost buck power supply #090747. Please provide copy of user instructions. Thank You
Dear Les Wenger,
Here is the instruction.090747
Best regards.
Hello I have drok dc dc buck converter. Their power looking zero. I tried several times but it didn’t changed. Energy coming to bulk module, it is looking working but it seems zero power. So outlet amper also seems zero. How can I change it. Thanks for your support. Have a good day.
Hello RIDVAN YAKUT,
Thanks for writng in.
Would you please offer a product link or ASIN number so that we can confirm the converter you mean?
And could you please tell us more details about your problem and operation?
Best regards.
I am installing a D85-2042A meter and have three questions:
Can the Hall transformer be exposed. to weather?
If meter is exposed to over the 100 Amp limit of the unit will it be damaged?
is the orientation of the hall transformer to the load cable critical (i.e. must be 90 degrees to the Avis of the cable?
Dear Pat,
Thanks for writing in.
We think it should be this item.100105
Hall transformer can’t be under blazing sun or rain. And the measure current can’t be over 100A, otherwise it will burn up.
It doesn’t matter if it is 90 degrees.
Best regards.
hello, do you have a datasheet for this module?
I have been trying to find one and didn’t..
best regards,
Dor.
Hello dor,
Thanks for writing in.
Would you please tell us which module you mean?
Best regards.
Hi Drok,
Could I have the datasheet for a DC-DC step-up convertor please? (300.01 or SKU7011)
Preferably with a circuit diagram of the device.
Thanks in advance!
Danny
Hello Danny,
Thanks for writing in.
We don’t have SKU number7011. Could you please send us the correct SKU number or product link?
Best regards.
I purchased “DROK 110V 220V UPS Battery Backup Uninterruptible Switching Power Supply 12V 120W 110V-240V to 13.5V DC 50/60Hz with Battery Interface for Charging” on Amazon. Product label says “Power Supply Model 4310”. There are no connection instructions. Can you please provide a user manual or circuit schematic.
Hello John Yanche,
Thanks for writing in.
We get your message through our service email, so we have replied to you there.
Best regards.
I need further instructions on a 10 led battery closet light.
Hello Bolser,
Would you please send us the product link or ASIN number so that we can confirm the product?
Best regards.
I have the DC 3-phase Hall BLDC Driver Board SKU: 2001708003. What is the part number for the large 5 pin rectangular connector. I want to build more mating harnesses. This is the large connector with MA/MB/MC/GND/VCC pins. Thanks.
Hello 1stSAGE,
The part number of large 5 pin plug is HV3.96 -5P.
Best regards.
I couldn’t find that part on the big distributors like Digikey, do you have a link for that part? Thanks in advance.
Hello 1stSAGE,
If you can’t find it with “HV3.96”, pleae try to search “VH3.96 5P”. It is easy to be found on Amazon and there are many choices.
Best regards
Working with DC three phase hall brushless motor control. Is forward/ reverse controlled by 5volts to one side or the other or physical connection to middle connector? Using Arduino to control with differential drive.
thanks
Hello Dave,
Here is a diagram for your reference.
Best regards.
Forward and reverse is controlled how? Center pin 5v forward,,, ground reverse?.
Hello Dave，
As the last diagram showed, forwar and reverse is conrolled by a jumper.
It is easy to operate. Short connect the lef pin or right pin with centerl pin. The centerl pin is common.
Best regards.
The Drok Dc-Dc converter has no instructions! It says power in and power out ! I connected it to the battery and as soon as I connected it to the bazooka speaker it started to sizzle and smoke ! So disconnected it ! Can someone please call me I 512-944-4200
Hello James Harrison，
Would you please send us a product link or ASIN number so that we can confirm the product you mean?
And to check problem, could you please tell us more details about your operation? For example, input voltage/current, output volage you set.
It would be appreciated if you can take some images to show the wiring.
Best regards.
Hello Drok-Team, we are searching for an UL/CSA approved DC-DC Regulator like your product code: 090081. Any item available?
Hello Mirco Schütz,
Thanks for writing in.
As this is semi-finished product,we are sorry we don’t have UL.
Best regards.
Hello,
I am an engineer with AquametericsUSA in Auburn, Washington, USA.
I have purchased several of your 600 w 12-60v to 12 – 80 V DC to DC converters for evaluation.
question 1:
The power supply came without instructions. There are two trim pots.
What is the function and location of each prim pot ? Is there a site with instructions for this and other products?
question 2: Our products are are also made in China. If we use your power supplies in our products in our products, we assume that our Chinese manufacturer be able to buy your DC to DC power supplies in China and avoid over seas shipping charges. Is that correct?
Please send a link to a complete list of your AC/DC and DC/DC converters.
Thank you,
Joseph Walsh engineer
Hello Joseph F Walsh，
Would you please confirm if it is thie product.https://www.amazon.com/dp/B00E8D7XYG
As this is a semi module, our manufacture doesn’t have insruction for it. Here is a pdf we make. 090089
It is availabe to order directly for us. You can look through our product here.Amazon store
Best regards.
Hi Drok team,
Got another question on the DC 3-phase Hall BLDC Driver Board SKU: 2001708003. I bought two of these, and neither one shows any signs of life when I hook up MA/MB/MC on an oscilloscope. I applied 6V at VCC, the board has a little red LED that lights up and I can measure 5V at the 5V regulator output. I tried hooking it up to my motor, but it doesn’t spin. Do I have two defective units? Is there something I’m missing? I just need to connect MA/MB/MC to my 3 wire motor, the motor return should connect to GND of the board, and I can apply any where from 5V to 36V DC to VCC right (I use 5V-6V for my motor)?
Hello 1stSAGE,
Would you please check if you hook it up like below diagram?
Best regards.
I hooked it up that way except for the hall sensor, I left those floating. Do I need those terminated for this version of the board to work?
Hello 1stSAGE,
This item is for brushless sensor motor. Without sensor, it can’t work. If your motor is sensorless, it is not suitable.
Best regards
Is there a way to disable the hall sensor part and make it work with this board? Or do I need to buy the sensorless version you guys make?
Hello 1stSAGE，
There is no way to change it. If you motor is sensorless, pleae choose sensorless one.
Best regards.
Do you sell a sensorless version with 5V PLC speed control? If so can you link it? Thanks.
Hello 1stSAGE,
Here is an item for your reference.2001712009
Now it has been out of stock. As it has been updated, we will sell the new version later.
Best regards.
Do you have a product link to the new sensor less design? When will it be available? Thank you.
Hello 1stSAGE，
We don’t get the new version now, so we don’t have product link to it. It may take at least one week to prepare
Best regards.
Need help— Purchased a Drok digital time relay from AMazon. I have inputed some time data point that I now want to RESET— how do you CLEAR the memory and start over. There are no instruction to reset the device and clear data point. James jglandi@aol.com
Hello James Landi,
We have many kinds of time relay. Would you please offer a product link or ASIN number so that we can confirm the item?
Best regards.
Hi,
I bought the Mini 3-phase BLDC driver, part #2001710013 from Amazon, can I remove the potentiometer and control speed with a 5V signal across the 3 pins? If so, how would I do it? Do I need to supply the 5V logic to MIN or MAX pin?
Thanks!
Hello 1stSAGE，
It is unavailable to it by that way.
Best regards.
Do you sell a mini one, sensor-less, but one that I can control speed with a 5V supply?
Sorry, so far we don’t have such mini one
Best regards.
Here is the description of the item that I have copied from the AMazon site, as follows:
This item: DROK DC 12V Timing Delay Relay, 10A 1500W Multifunctional Automotive Relay Switch with 18 Functions, 0-999S/M/H Wide-range Digital Delay Module with Dual-color LED Display, Support Cycle of Time
My question again is as follows: How do I erase, clear, and reset the device. I CANNOT get it to set up to count down in hours (P 2)– it will only permit me to set up in seconds P 0 or minutes P 1. I want the device to cycle every 12 hours… so that the relay “pulls” for 12 hours, then releases to 12 hours, and keeps doing JUST that cycle with NO interruptions . Please help me. jglandi@aol.com James Landi
Hello James Landi,
Please check if it is this one. 300456
There is no way to clear the data. You can only change setting parameters. Did you keep press SET then come to PO mode? Can you short press up or down button to choose P0-2?
Best regards.
Hi;
I’m Burak Erdogan from Germany. I need a constant 5V for 4V to 30V variable input for the automotive project. I found your product on Amazon (https://www.amazon.com/gp/product/B06XG2KPTS/ref=ask_ql_qh_dp_hza).
Can I use it or can you suggest me another product?
And what is the delivery time to Germany for this product
Thanks
Hello Burak Erdogan，
We received your message through our service email, so we have replied to you there.
Best regards.
Need manual for electronic load with OLED screen. Thanks
Hello tony，
Thanks for your message。
Would you please firstly send a product link so that we can confirm the item?
Best regards.
We purchased some DROK DC/DC Converters several years ago that take in 24V and put out 12V5A Max (X000H7BZ51). 3 need to be replaced but I can’t seem to find the item on the website can you help?
Hi Nick，
X000H7BZ51 is Amazon package label, please confirm it is this item. 090607
Best regards.
I have the L298N V3 DC Stepper Motor Controlle. Do you have any wiring examples to hook up an RPi and one or two 4 wire stepper motors? TIA
Hello Bobby Stevens,
We are sorry we don’t have wiring example like that.
Ther are only some wiring instructions, as follows:
dear DROK
please send us a quote for 20 pcs
water proof amp hour meter
DC
for measuring total hour of use of our trolling motors
we are a solar / electric boat rental company
we wish to know how many hours our engine have run in order to service them.
our engines are 12v 600w max 55amps draw
we have 4 x lead acid batteries each 100amp deep cycle
thanks
Berend
UAE
Hello Berend Lens,
Thanks for your interest.
Would you please tell us the detailed parameters? What is the measurement range?
Best regards.
Hello,
please send user manual for 110.048
I would also like to confirm that this will work in bridge mode to provide 220watts at 4ohms to a subwoofer.
Hello David M,
Thanks for writing in.
We have attached manual on Amazon product page. Here is the link for it 110048
In bridge mode, it provide 220W at 3 ohm instead of 4 ohm. Power supply is 36V.
Best regards
We need this SMPS 5 Nos immediately. If there any possibility to get this within 7 to 10 days. We are from India,Tamilnadu(Chennai)
15W Power Converter AC 90~240V 110/220V to 5V/3A LED DC Switching Power Supply/Voltage Regulator/Power Adapter/Driver
Hello DL,
Thanks for your inquiry.
As this item is from China warehouse, we are sorry it may be hard to reach you within 7-10 days.
Any moure questions, please let us know.
Best regards.
We need this SMPS 5 Nos immediately. If there any possibility to we get within 10 days. We are from India, Tamilnadu, Chennai.
15W Power Converter AC 90~240V 110/220V to 5V/3A LED DC Switching Power Supply/Voltage Regulator/Power Adapter/Driver
Hi here Christopher From Colombia,
I would like to know, if you free shipping your products over an specified amount on the USA. I will buy five 15 watt power amplifier boards and six 8 ohm 15 watts full range 3 inch round speakers.
Best regards.
Hello Christopher Vottela，
Thanks for your interest.
Do you mean place order through Amazon or from us directly?
Could you please tell us which items they are?
Best regards.
Hello,
Sorry but searching your website or forum is useless! No results are ever displayed no matter the search terms. I have copied several of your Amazon items for sale and entered many variations of the item names and/or descriptions but your search engine always says nothing is found! Please fix this so your website is workable.
Thanks,
Hello Darvin Sparks，
Thanks for your suggestion.
We still have lots of shortcomings, we will try our best to do better.
Best regards.
Good afternoon!
Would you have any US Vendors that would have the below available by chance?
DROK Signal Generator
Power Supply: DC 12-24V
Output Voltage: 0-10V
Output Current: 0/4-20mA
Hello Stephanie，
We have one work with DC 24V power suppy. You can find it on Amazon.
Here is the link: https://www.amazon.com/dp/B071NLGP6L
Best regards.
Just purchased vac9010h meter how can you extend cable from Hall effect sensor to meter?
Hello john,
You can extend the original cable with shield cable. If it is not convenient for you to refit the original one, you can buy longer one directly.
Hope this can help you.
Best regards.
Where do I buy a longer cable?
please respond to my email, skubon@icloud.com
thank you
Hello john,
If you want to buy a longer cable with 6pin connector, you can serach it on Amazon. The connector pitch is 2.54mm.
Hope this can helpl you.
Best regards.
I am trying to add extra speakers to my home theatre receiver which has line-out levels of 100mV/2.2kOhm. I purchased the Drok audio amplifier SKU 200336, but it does not say what the audio input is expecting. The previous amp I purchased (different manufacturer) claims line-in, but is expecting headphone levels. Obviously this does not work as the levels out of the receiver are not enough to compare with headphones. Is this the case with the Drok that I purchased.
Hello Fred Bloggs,
There are two Audio Inputs: connect with wireless Bluetooth 3.0/4.0/4.1, or choose the headphone (Line in) way.
Best regards.
hello
we are looking for
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DROK DC-DC CONVERTER 481220L QTY – 6
please advise price and delivery
thx
Nick Canada
Hello nick,
Thanks for your inquiry.
We received your email, so we have replied to you there.
Best regards.
Ahaa, its nice conversation about this piece of writing at this
place at this webpage, I have read all that, so now me also commenting at this place.
Do you sell cases for SKU:180051 preferably a see through case, if not do you know where i could purchase one?
It doesn’t seem safe to use without a case or enclosure to prevent accidentally short circuiting.
Hello Daniel,
Thanks for writing in.
We are sorry we don’t sell case. This item doesn’t have specific case. It is semi-manufactured module for DIY, so you can try to find one case which size is nearly close to its.
Any more questions, please let us know.
Best regards.
I have jumpered J1, J2, J3, and J4 to put the 160Wx2 amp with chip TDA7498E into BTL mode. a red light comes on at D9 when power is turned on. is this normal?
Hello David，
Thanks for writing in.
Do you mean this item? 110048
As long as you connect power supply, D9 light will turn on no matter whether it is BTL mode.
Best regards.
Hello,
I have purchased an amplifier SKU:2001709008, the mono version. The audio input has 3 pins. How should those be connected to a single ended input which has only 2 pins?
Thank you.
Hello Brian Hill,
We have received your email and replied you by email.
Please kindly check email.
Best regards.
Need ship date on order 1534
I bought the MPT-7210A and installed with one 40V/8A panel, with a 48ah/24V battery. But the charge voltage i need is about 27V. The problem is that the charge voltage of the MPT is around 33V. I think is too high and may damage my battery bank. Any suggestions, I set the panel on 40V and the battery voltage to 26V. Need support…
Hello Alex,
Is this the item you bought? 200322
It is a boost converter. Output votlage must be higher than input voltage.If you want to set output votlage to 26V, input voltage should be below 26V.
Best regards.
seeking application advise , I need to reduce the power drain on 12 volt batteries the load is 2 strings of led modules each string has 18 modules which draw 3.2 watts x 18modx 2 strings = 115.2 watts at 12volts the load is approx. 9.6 amps I need to reduce the current to approx. 3.7 amps knowing that the illumination will be almost reduced by 50% I’m currently using your drok dr 180076 numerical control. which I’ve been buying though amazon is this the best product to use for my project?Any advise you can provide is appreciatedRichard MaterioFiore
Dear Richard Materio,
Thanks for writing in.
Would you please tell us more details about your setting? According to your descrption, input voltage should be 12V, what is output voltage?
For this item, input voltage must be 1.1 time larger than output voltage.
Best regards.
Hi, I purchased the 60-amp motor controller board on Amazon. I didn’t receive any kind of a schematic or connection reference. Will you please provide one?
Thanks
Hello Justin Limb,
Thanks for writing in.
Would you pleae tell us which item you bougth?
We will find solution for you when we confirm what it is.
Best regards.
Do you sell the current sensor for the VAC9010H without the display?
Hello Mark Rosswurm,
Thanks for writing in.
We are sorrry we don’t sell this kind of sensor separately. Any more questions, please let us know.
Best regards.
hello I try to buy this article in amazon.com USA but when I enter another different module will appear
Switching Power Supply Module AC 85~264V or DC 110~370V to DC12V1A / 5V1A Dual Output Buck Voltage Regulator/Power Adapter/Power Converter/Driver Module
Hello wilberto,
Thanks for writing in.
We are sorry now we don’t sell this item on Amazon, so Amazon page doesn’t show it.
Any more questions, please let us know.
Best regards.
I just bought:
DROK DC 9-48V 16KHZ PWM Electric Motor Speed Controller, Small 20A DC Motor Controller with Sensitive Knob, Support 0-5V Frequency Converter Input Control for Car Automotive DC Electric Fan on Amazon.
It works fine, but I am not able to turn off the power to the controller – the red light always stays on even when the system is not in use. I have to physically disconnect the wires from the motor to shut off the power. Is this a defect, or are they designed to leave the light on all the time – it would run down my battery even when not in use for several days!
Amazon ORDER # 112-1946581-9329044
Hello Yaz F Bilimoria,
Thanks for writing in.
We are sorry this item doesn’t have on/off switch, so it can’t be turned off directly unless disconnect power supply.
Any more questions, please let us know.
Best regards.
Hi,
I purchased a DC BidirectionalDigital Multimeter from Amazon a couple of days ago and realized I ordered it without the shunt necessary for me to access all of its functions. Would it be possible for me to order it directly from you?
Model : SIN9020S
SKU : 200320
Hello Perry Khan，
Thanks for your order.
200320 doesn’t need shunt, here is instruciton 200320 pdf
Best regards.
Just received my power meter: “DROK DC 0-300V 200A STN LCD..but the ct cable is neatly sliced. See photo. Please contact me to send a replacement ASAP. Steve_wollenbeg@yahoo.com.
Hello Steve,
Thanks for writing in.
Would you please tell us what wrong with it? There is no photo, could you please send it again?
And please kindly check your email address. Our email can’t be sent out and it show this email address doesn’t exist.
Best regards.
I purchased the DROK Portable Wireless Bluetooth Audio Receiver Board. Supports three inputs. From Amazon. https://www.amazon.com/gp/product/B01FU12QC8/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
I must install it behind a panel and cannot access the buttons. Is there any way to latch the volume to max. I could solder a jumper or change a resistor.
Your assistance is greatly appreciated. Thank you so much.
— Steve Falkenberg
Hello Steve Falkenberg，
Thanks for your order.
Is it possible to have a hole in the panel? That should be more convenient for you to adjust volume.
Best regards.
need circuit digram (schematics)
are there discount possible
if buying more then one item ?
Hello sdd,
Thanks for writing in.
We are sorry our technicians doesn’t allow to show circuit digram.
Would you please tell us which item you want to buy? For more details, please kindl contact us directly by email(service@droking.com)
Best regards.
Purchased a DROK NC Buck Converter Part Number 200326
https://www.amazon.com/dp/B0744BT79M/ref=twister_B06Y417M3Z?_encoding=UTF8&psc=1
I’m supplying it with 48V DC but I cant seem to any voltage higher than 9V out of the unit. Anything high than 7-9V and its stuck in CC mode even though the current is set to 15A. The voltage fluctuates between 0-9V and sometimes won’t output anything at all. I’m looking to use the unit to charge some batteries at 36V. Any help is appreciated.
Thanks
Hello Sid，
Thanks for writing in.
This item doesn’t have CC mode. Did you set output current as 15A? What is the output votlage you set?
To find solution for you, would you please take a short video to show the problem and your operation?
In that way, we can get more information and find solution more quickly. (If it is hard to upload video here, please try to send it to our service email: service@droking.com )
Wait for your reply.
Best regards
On DROK Signal Generator, amazon# B071NLGP6L how can I connect a switch to it? I see a 6 pin input for Power with On and Off on the front
Hello Levi,
Thanks for writing in.
You need to solder a 6pin toggle switch there. Just like this one.https://www.amazon.com/Switch-MSS-22D18G2-Vertical-Toggle-Handle/dp/B073PXX4FL/ref=sr_1_1?s=industrial&ie=UTF8&qid=1534067406&sr=1-1&keywords=MSS-22D18G2+2P2T
Best regards.
Need the instructions for product code 200088
The URL for other requests for this set of instructions does not work.
Thanks
Hello Cary Woodson,
Thanks for writing in.
For some of products, we have pdf instruciton on Amazon product page. It is on “Technical Specification” part.
Please kindly click on these link to download it. https://images-na.ssl-images-amazon.com/images/I/81-wrtIMYVL.pdf
Any more questions, please feel free to contact us.
Best regards.
do you have paper catalog? My boss prefers to shop that way, we purchased a couple of your items and interested to see what else you offer.
Hello Alexandra Andreeff,
Thanks for writing in.
As our products are updated quickly，it is hard to update paper in time, so we are sorry we don’t have paper catalog.
All of products can be found in our Amazon store, would you mind browsing through there?
For any more questions, please let us know.
Best regards,
DROK
Hallo I have just ordered 5 tweeter 1.5 inch 6 ohm, but I realized I need instead 5 at 8 ohm .
Could you change the order please?
Hello Andrea Bosio，
Thanks for writing in.
We have received your message on facebook and replied there.
Best regards.
#30212REPLY |
I HAVE ONE DC MULTIFUNTIONAL METERS (SKU:200193) THAT I HAVE USED FOR CLOSE TO TWO YEARS. IT JUST STARTED REPORTING A -1.5 AMP OFFSET FROM ZERO. MY SECOND MULTIFUNCTION METER (SAME SKU) ALSO JUST STARTED ACTING UP SIMILARLY BUT WITH A ZERO CURRENT AS -20.4 AMP. VOLTAGES AND TIME ALL DISPLAY CORRECTLY. NEED ADVISE ON WHAT IS HAPPENING AND HOW CAN THE CURRENT CAN BE ZEROED OUT.
Hello Philip Dara，
Please try the following zero clearing operaton：
1. Please move the red cursor to “NCP”
2. Keep pressing up button for 3 seconds. After that, there will be 3 options.
3. Make the red cursor pointing to C-I, and press “OK” button. Then you will see “I=0”, at this time, please press up or down button to reset. （Please notice in zero clearing process, it can’t be connected with any load and no output current）
4. Press “OK” button again, you will see “I>0”(connect a 3A load). Then press up or down button to make the current value is in accord with 3A load. Press “Ok” button to save settings.
Best regards
I purchased a Drok JS-C33 General Programmable Power Display. I installed in my 36 volt golf cart. When fully charged the indicator displays 37v and 100% battery. Issue is the longer I use the cart the voltage level decreases slightly however the battery level remains at 100%. Is there a setting to apply for a 36v golf cart so the battery level displays properly?
Thanks,
Brent Pearson
Hello Brent Pearson,
Thanks for writing in.
We are sorry we can’t search item with JS-C33. Would you please send us product link? Or ASIN number, all of products on Amazon has that number.
Best regards.
Hello! I have bought some LCD Digital Volmeter 110V/220V by http://www.amazon.com.mx in Mexico, but I realized there is no more stocks available within this website.
I got your business card inside my package, so I would like if there is any possibility to continue buying your products by Amazon Mexico or if there is another way to get your products in a few time, but a just price.
Please let me know your coments.
Thank you in advance,
Hello Barbara Gonzalez,
Thanks for your supporting on our product.
Would you please tell us which item it is?
We may not sell item on Amazon Mexico in the future.But you can order on Amazon US, which should be the fastest way.
If it is not urgent,you can also order directly from us. We will ship items from China warehouse.
Any more questions, pleae let us know.
Best regards.
I purchased a Drok signal generator. Can you please give me instructions on using it to generate a signal for troubleshooting?
Hello Kent Riffell,
Thanks for writing in.
Would you pleae tell us which signal generator it is?
ASIN number or product link can help us to confirm item quickly.
Best regards.
I look for DC switching power supply 220Vac with variable DC 48 to 60VDC output. Max current 15 and 20A
I have a telecom project with q’ty 200pcs to quote to my customer.
It is switching power supply for charging 48VDC Battery. The output current max can be 15 or 20 A. I intend to offer 2 models to the customer.
Could you please send us quote for q’ty 2/20/80 ea?
Hello SETSIT TANTHONG,
Thanks for writing in.
It’s regretted we don’t have item can meet your requirements completely.
For any other questions, please feel free to contact us.
Best regards.
I purchased 2 dc 5v-48v 16A dual H bridge from Amazon. It requires PWM and direction input. I programmed and connected an Arduino to control the voltage and I’m using a stable variable voltage source. Even though I have checked the connections and the program several times for errors, it does not work. I cannot find any information regarding the board and it is getting very frustrating. I have checked the power supply and the motor with other controllers and they both work fine. I have checked different power supplies, Arduino boards, and motors with this product and none work.
Please provide information on what may be the issue otherwise I will have to return both controllers and look for alternatives.
Thanks
Hello Rad Gharavi,
Thakns for your message.
Is it this item? https://www.amazon.com/dp/B078TFLD7Q
Would you please tell us how it can’t work? It doesn’t power on or it can’t control motor.
And could you let us know more details about operation parameters? For example, input voltage, motor specification, is it dc brush motor? and etc.
It would be appreciated if you can take some images to show wiring and details.
With more information, we can find solution more quickly.
Best regards.
Hello: I recently purchased a battery monitor, sku : 200191 200192. The unit seems to give a fairly accurate reading, impressive. My only issue is the light on monitor does not switch off. The light is always on when connected. I hope you can help me out with this unit,, or suggest a model that would show battery status for lead acid 12v and 24 v. Love your stuff. Rick
Hello Richard Cauchi
Thanks for your order and support.
We think you should talk about backlight. We are sorry there is no way to turn off backlight.
Here is an item for your reference. Its display can be turned on/off, https://www.amazon.com/dp/B077S4VDGB
Any more questions, please let us know.
Best regards.
I recently purchased a model 090118 voltage regulator from Amazon.ca and need instructions for using it.
Hello John Lane,
Thanks for your order.
Here is the pdf instruction.090118
Hope it can help you.
Best regards.
Hi
just bought your dc motor controller dc6-90v. what is the max input voltage
Hello Daniel John Van Gompel,
Thanks for your order.
Is it 300429? Input voltage range: DC6-90v.
Best regards,
DROK
I am apart of a major distribution company. Is there someone we can contact if we would like to see if we are set up to buy from the company direct instead of through amazon and at a discounted rate if we are going to buy the product in bulk?
Thank you
Brock Batteh
Hello Brock Batteh,
Thanks for your message.
Would you please contact us throught Service@droking.com? You can send your order requirement there.
Best regards.
Need wiring diagram for connections on signal generator
information sure vos produit et Entreprise Tel:581-329-8930
Hello Brégite Bardeau,
Thanks for your message.
If you have any questions, please feel free to contact us here or by email(Service@droking.com)
Best regards.
Hello I’ve purchase probably 100 or more of the DC volt meter model #031 they all used to turn on at about 1v but the last 3 I’ve gotten. Don’t turn on until 7v is there a different model with the same size case I can get that does turn on at 1v? Thanks for any help.
Hello Justin,
Thanks for your orders.
We are sorry we can’t confirm the item. would you please offer a product link?
Best regards.
I purchased a Drok cycle timer, MPN 2001711005, but it did not come with any programming instructions. Are they available online?
This is a link to the item: https://www.amazon.com/DROK-Digital-Display-Adjustable-Controller/dp/B07B3VQ96Z/ref=sr_1_1?ie=UTF8&qid=1540507750&sr=8-1&keywords=Timer+Relay%2C+DROK+Digital+LED+Display+Relay+Switch+Panel
Thanks for your help,
Jon
Hello Jon Kulp，
Thanks for your purchase and sorry for inconvenience caused on you.
Actually, we have pdf instructon on product page. As shown in the picture, you can download it there. https://images-na.ssl-images-amazon.com/images/I/B1SM7+mHnWS.pdf
Best regards.
I purchased 4 of these back in May 04/18 AC 130-500V 200A LED Volt Amp Meter.
We installed our first one, and the amp meter is reading 3 times higher than it should. Could it be defective. I have included a link to the item. I can also send a pic.
https://www.amazon.com/DROK-Multimeter-Voltmeter-Transformer-Two-wires/dp/B01M8LCWNW
Hello Jason Haftar,
Thanks for writign in.
Would you please tell us how large is the reading and actual current? What kind of load did you measure?
And did you check it with other precise meter？
If you can, please kindly send picture to our email.(Service@droking.com)
Best regards.
I purchased the DC6-90V 15 Amp max for a motor control on a salt spreader. When we wire it up it does nothing to control the speed of the motor. Is something wrong with it?
Hello Ralph Smith,
Is it this item? 300429
Would you please tell us more details? For example, input votlage/current. Does the output voltage not change when you regulate potentiometer? And is your motor DC brush one?
Is it convenient for you to take a video to show how it is? You can send it to Service@droking.com
With more information, we can find solution more quickly.
Best regards.
The voltage goes down but the speed of the motor does not change. input voltage is 12 VDC and it drops it to 10 VDC only.
Hello Ralph Smith，
Is it DC brush motor? And how is the output when without load?
To check it carefully, could you please kindly take some images or video to show more details?
Thanks for your patience on this issue.
Best regards.
I wanna know when you gonna send my order #2570 ?
I purchased model fs11d12a3 to go from 12v to 5v max doesn’t seem like this will work for what I need
Hello bob hloska，
Thanks for writing in.
Would you please send us the ASIN number or product link so that we can confirm which it is?
And what is your problem on this item?
Best regards
I purchased 114-0431245-7650634 off amazon USA. It doesn’t work.
Hello Rick，
Thanks for writing in.
To find solution for you, Would you please tell us more details about the problem?
Best regards.
Good morning I would like to pay with a credit card but it does not give me the option, they could help me with that.
Hello Maria del refugio,
Did you use credit card through PayPal? You can use credit card through paypal directly without paypal account
Any more questions, please feel free to email us.
Best regards.
Hi, I just bought a Humidity and Temperature Controller Product Code: 200381.
The display may suddenly become blank. I have to disconnect and reconnect the power to make it work.
Will please let me how to prevent it from happening?
Thanks, Jerry
Hello Jerry，
Thanks for writing in.
This issue may be caused by connector or sensor. Is it possible the connection is not strong enough?
If it doesn’t have above issue, please kindly email us your order ID so that we can deal with it. Service@droking.com.
Best regards.
I bought the DROK -20 to +100℃ Digital Thermometer, DC 4-28V Indoor Outdoor Thermometer at Amazon and installed it in my vehicle today. It functioned properly for about five minutes, then the outside sensor display suddenly switched from the OAT to “ERR”. I extended the sensor wire by about one meter, in order to mount it under/inside the front bumper. Again, the device initially worked fine.
Hello Tim,
Is it this item? 300462
Do you mean the meter display “ERR”? Could you please kindly take some images to show how it is? And how large is the power supply?
If you are not sure how to send picture here, please send it to service email(Service@droking.com)
Best regards.
I purchased the DROK Digital Programmable Time Clock Switch Timer Relay Board DC 5-60V Input Time Controller 24 Hours 4 Digit Timing Delay Module with Micro USB 5.0V Input Port but the load pulses instead on activating the load 100%. I disconnected a lead from the load (9V motor) and when I reconnected with the motor again it worked normally. I’m using a 9v batter as the power source. Any idea why this is happening?
Hello Hector,
Thanks for writing in.
Would you please tell us more deails about the problem? Which wiring did you use?
Do you mean it can’t control motor before reconnecting?
Best regards.
I purchased this amplifier with Bluetooth to do a review on my YouTube channel and was excited to see it in the mail. I started the video where I talk about the board and show closeups of how great it looks and the type of chips used. I then connect power and Bluetooth connect and everything is going well – but then the volume will not increase. I just can’t seem to get any power out.
i am an electronics engineer so I do know how to connect things.
Any suggestions? I will return it to amazon and give it the review it deserves at this point on both my channel and amazon unless I hear back from you.
Thank you in and advance,
Eddie Aho
Amplifier Wireless BT 3.0/4.0/4.1
Hello Eddie,
Thanks for your order.
Is it this item? 200336
Would you pleade tell us how large the input voltage and input current? If input power is not enough, it is hard to power speaker.
Best regards.
I saw your waterproof voltmeters on amazon and wanted to know if I ordered 50.00 worth would I get for any better price?What would the shipping be also
Hello Wayne Philbrick,
Thanks for your inquiry.
Would you pleaes tell us which item it is and shipping address?
Can we email you for more details? Our service email is Service@droking.com
Best regards.
Hi… Do you have any dealers in India? How can we get your products delivered to India?
Hello Vishwak,
Thanks for writing in.
We don’t have delers in India. But we can ship items to you from China directly.
For any more questions about order, would you please kindly contact us by email? (Service@droking.com)
Best regards.
I recently purchased a your transistor tester from amazon and it has a constant D5 displayed diagonally
on the screen. I can send you a pic if you need it.
Hello Darrell Crum,
Thanks for writing in.
Is it 300427? Does it occur when you receive it?
It would be appreciated if you can show how it is by images. If you are not sure how to upload pictures here, please send them to our service email.(Service@droking.com)
Best regards.
Hello Darrell Crum,
We confirm the “D5” is on protective film, please tear it off firstly.
Best regards.
I just bought a 4-20 mA signal generator . Do you have a wiring diagram for its use or some instructions somewhere?
Hello Robert Schoenfeldt,
Thanks for writing in.
We have several 4-20mA signal generators. Would you please kindly tell us which one it is?
300425
300482
300480
Best regards.
Hello, I just purchased this amplifier module:
DROK Mini Stereo AMP Audio Amplify Board Digital Portable Ampli Module 10W + 10W Dual Channel Amplifier Class-D 12V DC
https://www.amazon.ca/gp/product/B00C4LB57A/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
I need the wiring diagram/schematic or instructions on how to wire it up correctly if you have it.
Thank you
Hello Dillon,
Thanks for your business.
Please refer to following picture. Any more questions, please feel free to contact us.
Best regards.
I just bought 5 of the Mini USB LED lights, but none them work in THREE chargers that I tried. Is it me, or the lights??
Hello Charlotte,
Thanks for writing in.
Would you please offer product link or other details so that we can confirm which usb light it is?
And could you please take some images to show your opearation?
With more information, we will find solution quickly.
Best regards.
DROK TPA3116 Digital Power Amplifier Board 12-24V High Power Amplifier Module 50+50W Power Amplifier Chip with Volume Adjustment Potentiometer Switch Support PBTL 100WCAN YOU SEND ME A DRAWING OF THE WAY YOU WIRE THE INPUT AND OUTPUT SPEAKER WIRES FOR RUNING A MONO SPEAKER? I know you have to unsolder S1 and solder S2,S3,S4,S5,S6!Thank You.trbolf@yahoo.com
Hello Tom Bolf,
Thanks for writing in.
We are sorry we don’t have that drawing. Below is S1-S6 setting for different mode.
For any more questions, please kindly let us know.
Best regards.
Hi, I got the Relay Module XY-WJ01 and I do not understand the diagram for the DC 6-30 and the middle two connectors. The only time the display lights up is when the batteries go into the -^+^ connecters. Nothing happens when the motor is connected to the other two connectors.
I need to run a 12v battery pack in to the timer and have it turn on an electric motor for x.xx amount of seconds and then turn off the electric motor.
Did I buy the wrong relay or does it require an external trigger (as in the bottom diagram) to make that happen? Please help.
Hello Steven,
Thanks for writing in.
With XY-WJO1, we find out this item, 200391
As per DC6.0-30v wiring diagram, please connect power supply to V+ and V-, then connect middle two ports; the last port is connected to the negative ofload; the positive of load is connected to power supply positive.
Any more questions, please feel free to contact us .
Best regards.
I have several of the 100 Amp AC current transformers and I was wondering if a load resistor is required and if so what value is recomended.?
Hello William Helvig，
AC current transformer is connected directly to meter. It doesn’t resistor.
Best regards.
Is it acceptable to wire several meters with a common AC power source, or do does the power leads need to be one the of same as the conductors that the CT is monitoring?
Hello tom poe，
Would you please tell us which item is it?
Best regards.
I have the DROK D85-2042A digital meter with a Current Transformer.
Question was regarding use of multiple meters. Can thay share a common power source?
Question was regarding use of multiple meters. Can thay share a common power source?
I have the DROK D85-2042A digital meter with a Current Transformer.
Hi, I bought your 100a battery meter and just recently tested it out. It seems to work great except for it doesn’t show the correct amperage. It will show around 5 amps more than it is really pulling. The voltage reading is also off a little. Is there some reset or calibration I can do to get it to read right?
Hello Alec，
Thanks for writing in.
Could you please tell us which battery meter it is?
Best regards.
I just purchased a model DF-01-TV.1
voltmeter and Thermometer in F – Do you have the same model with a usb charger? Must read degrees in F not C
Hello John Mikell Jr,
Thanks for your order.
We don’t have same model with usb charger. Item with usb charger can only read centigrade degree.
Best regards.
Hi,
I recently purchased a
Bluetooth Amplifier Board, DROK Digital Amplifier Wireless BT 3.0/4.0/4.1 Audio Amp Board Headphone 2 Channel 50W+50W Small Amplifier Module with Protective Shell
from Amazon. When power is applied the board announces the input – line or bluetooth. If the volume is set high, this can be annoying. Is there any way to disable this announcement?
Thank you.
Hello Rich，
Thanks for writing in.
We are sorry the volume can’t be disabled.
Best regards.
Hello my name is Donald Priest on Jan.13 i received from amazon yb4835va ac volt/amp meter. When i got it and opened the box there was 2 wires red /Black to the power line. So i connected a 2 wire power cord plunged it in worked fine. In connecting the ac pick up coil plunged in the meter one of the coil wires come loose in picking up the i tuched the bare wire and GOT A REAL BAD SHOCK. I am a ham radio operator and 37 yrs at Whirlpool here at Evansville Indiana i have a bad heart and on 4 lii. of oxygen and 80yrs old.So after picking my self up off the floor i starting seen what is wrong. Weii you are sending this idem out to the pubic with a 2 wire service so you have a 50/50 chance purging in the pick up coil is charger with line voltage. I would hope you take these things off the marked.
Hello Don Priest,
We are sorry to hear that.
As per your description, it seem you connect meter when circui turn on. Is it right?
Please hook it up when power off, and firstly connect CT part then voltage measurement part. Otherwise,it is easy to get an electric shock.
Any more questions, please kindly let us know.
Best regards.
purchased part 100132 digital car clock thermometer volt meter. information shows the clock 12 hour. how do I switch from 24 hour to 12 hour.
Hello Robert,
100132 should show 12 hour time system only. Did you receive wrong item?
Best regards.
I purchased 2 of your 200223 PWM units. I was planning to monitor the output of each unit with a digital panel meter. The meter can monitor two sources but has a common ground. Can I use the meter to monitor the outputs if I use diode isolation?
Thanks, Mark
Hello Mark Beebe,
Thanks for writing in.
We hope to check the wiring. Would you mind drawing a simple diagram to show that?
Best regards.
I purchased a 2001709010 from amazon it worked for 2 days now only flashes random letters does not respond to k buttons on back
Hello Jim Withey,
Thanks for writing in.
May I know more details about operation? For example, the battery voltage, setting.
Is it convenient for you to show how it is by video? You can upload video here or send it to service@droking.com
Please don’t worry, with more information,we will find soluiton for you.
Best regards.
I’m looking for the manual / datasheet for 090143 Buck Converter
Component Amazon Link
https://www.amazon.com/gp/product/B00C9UUFHC/ref=as_li_tl?tag=proeng-20&keywords=buck+converter#feature-bullets-btf
Thanks!
Charles
Hello Charles Hostick，
Here is a simple instruction for your reference.
https://www.droking.com/cs/wp-content/uploads/2019/01/090413.pdf
Best regards.
https://www.droking.com/dc-7-32v-to-0.8-28v-adjustable-step-down-power-supply-module-buck-converter?search=090009&description=true
Does this CC CV buck converter require I add a diode in series on the output when used to charge batteries? I have seen where some buck converters require a diode added on the output in order to prevent the battery backfeeding into the converter and damaging it when it isn’t powered.
Is this one of those buck converters? I don’t see it listed in the notes requiring such so I wanted to make certain.
Hello Casey，
Thanks for writing in.
This item don’t have protection on current back feeding. If it is used for charging, it it better to add diode on output terminal.
Any more questions, please feel free to contact us.
Best regards.
I bought a dc buck module x001xqt3n1 from amazon. It came with no description or use instruction.
i need to know its specs and how it works
Hello george wheeler,
Thanks for writing in.
We are sorry we can’t find item with x001xqt3n1, which is not a reference number.
Would you please kindly send us product link or ASIN number?
Best regards.
Hi
I connected DC-DC buck converter (091029US) to load and set it up at 1.2V using potentiometer. But, I am not able to change the current using other potentiometer. Please help me with this issue.
Regards,
Omkar Bhandakkar
Hello Omkar Bhandakkar,
Thank you for writing in.
Could you please tell us more details of your application, such as the input voltage/current, the wiring, the load?
If you can, we sincerely hope that you can send us some images or testing video to let us check the problem details.
With your help, we can find a solution more quickly.
Best regards
Hello. I have your SKU 200356. My objective is to apply a 2.0 amp load to my circuit for 48 – 72 hours. Will this item work? Or, what is the max length of time this item can handle a 2.0 amp load?
Hello Dave Simon,
Thanks for writing in.
If working temperature is over 80℃ or power is over 25w, it will stop working. If you want to run it for 48-72 hours, please kindly pay attention to temperature and power.
Best regards.
Hello, my question is about the single way relay module delay power-off Trigger Delay Cycle Timing Circuit Switch, Is there a way to reverse P6 to work first the CL Time and then the OP Time? Please let me know.
Hello Allen L,
Thanks for writing in.
We are sorry we can’t confirm the item. Would you please kindly send us a product link or other information?
We will find solution for you once confirm which item it is.
Best regards.
Hi.
I have brought a Droking 4-20mA DC12V 24V Signal Source Signal Generator, Constant Current Source 0.01mA Potentiometer Adjustable, CC Power Supply Signal Generating from amazon uk.
It was nearly twice the price of a similar item so had hoped i would get a good unit with its proper documentation. I was as you can understand dissapointed.
would you please send a copy of the documentation-in english, or i will be forced to return the unit as unusable.
Hello Roland Fordham,
Thanks for your order and sorry for inconvenience may cause.
As this item is semi-manufactured module,manufacture doesn’t have paper for it. Here is a simple manual for your reference.
https://www.droking.com/cs/wp-content/uploads/2018/08/300425.pdf
Best regards.
Hi, I just buy DC Speed controller, DROK 6-90V 15A. Work good but the motor turn on the wrong way.
Can you tell me how to change the sens of rotation?
Thank you
Hello David,
Thanks for your business.
Is it this item? 300429
You can exchange motor cables to change direction.
Best regards.
Sir
I need 24v / 20a / 0 – 24 v variable control power supply. I need to deliver within ten days is it possible. How much total cost will come. Please send the details. Thank you very much I am in India. Chennai city.
Hello Sivakumar Srinivasan,
Thanks for your inquiry.
We are sorry we can’t confirm which item it is. Would you please sens us a product link?
The fastest ways should be shipped by DHL.
Best regards.
Good morning sir
I am sivakumar, I saw your products and I need 24v / 20A / 0 – 24 v variable control.
Please send me how much cost will come including shipping charges and how many days it will take to shipping to my place ( with in 10 days delivery)
Thanking you
sir
Please check I am sending the link of the product, https://goo.gl/images/VgG5PM
Please check the link,
https://www.amazon.co.uk/110-220V-Converter-Adjustable-Detector-Regulated/dp/B072P72NDR
Dear sir
I am waiting for your earliest reply
Hello Sivakumar Srinivasan,
You can place order here. https://www.droking.com/480w-ac-power-supply-digital-switching-power-supply-ac-110-220v-to-dc-0-24v-20a-adjustable-voltage-regulator-dc-12v-24v-driver-adapter?search=200305&description=true
With paypal account or not, you can use credit card through paypal directly.
And if you need it urgently, it is better to choose DHL.
Any further questions, please kindly email us directly. Service@droking.com
Best regards.
Posted: Do I need two “DROK® Digital Multimeter AC 80-260V 100A Voltage Amperage Power Energy Meter AC Volt Amp Tester Voltmeter Ammeter Watt Meter LCD Digital Blue Display Volts Current Measuring with Transformer CT” meters, one on each leg to monitor a 220v sub panel, or is there a way to do it with one meter?
Can I get the answer to this? Diagram 200123?
Hello Jerome,
Thanks for writing in.
Do you mean monitor two loads with one meter?
Meter can only connect one load. It can’t meet your requirement.
Best regards.
hi i would like to purchase DROk 12vdc digital timer relay board 1500 Watt relay module these off a vendor/distributor in united states, is that a possible?
Hello Dwight,
Except Amazon.com, we are sorry we don’t have other distribution channel in united states.
OPur items are stored in Amazon warehouse and fulfilled by them, you can get it soon after placing order.
Best regards.
Hi, every device has a user manual ok? I bought a transistor tester from amazon and it came without a instruction manual.Can i get it?
Hello Moacir Almeida,
Thanks for writing in and sorry for inconvenience may cause.
Could you please tell us which item it is? Most of items have a pdf manual on Amazon product page. If it is hard to find that, please kindly contact us.
Best regards.
I have a digital time relay SKU 300456 and would like to use a remote switch to start the timing cycle instead of the restart pushbutton on the board. I noticed connections on the board labeled J1. Can I connect an external switch to any of those connections to perform a reset. Would it be a DPST momentary contact switch? Thank you
Hello Tom Perazella,
Thanks for writing in.
We checked with manufacturer that remote switch is not available for this item.
Best regards.
Hello. I just received the 12-60v to 80v dc-dc converter and I noticed no solder on the left pole on what I assume are a type of transistor. Also only one has a screw and insulator between it and the heatsink. Just curious if this is how it is supposed to be. Thank you
Hello Bryan Robbins,
Is it possible to tell us your order ID so that we can confirm which item it is?
And could you please kindly show us how it is by images?
Wait for your reply sincerely.
Best regards.
Hi I ordered a 720w buck converter from you on Feb 14 but I’ve not received it yet even though I paid for 7-10 delivery. Please can you advise.
sincerely
kevin mills
Hello kevin mills，
Would you please tell us your order ID so that we can check for you?
Best regards.
Hello Dave Coulam,
Thanks for your order.
Could you please tell us which item it is?
We will find solution for you once confirm the problem.
Best regards.
No part number reference given only description as follows
digital ammeter / voltmeter dual display current voltage tester DC 0-100v / 5A car battery monitor with CURRENT SHUNT LED display QTY 2 purchased, supplied without shunts
regards
Hello Dave Coulam，
YB27VA is serial number, it includes many items. According to your information, is it 5A? We want to make sure if there are something wrong. 5A meter doesn’t need shunt.
Could you please send a product link?
Best regards.
the tag gives YB27VA
DC 3.5-30 V
DC0-100V
DC0-999MA
50A/75MV
HOPE YOU CAN RECOGNISE IT NOW
REGARDS DAVE COULAM
Hello Dave Coulam,
As we can’t get product link, we can only try to show some YB27VA meters for you. Please kindly check which one is correct.
100172: 5A https://www.amazon.com/dp/B00GJJRLE4?ref=myi_title_dp
100010: 100V/50A https://www.amazon.com/dp/B00BY4865W?ref=myi_title_dp
100043: 100V/50A https://www.amazon.com/dp/B00CJ5NYV6?ref=myi_title_dp
100045 100V/50A https://www.amazon.com/dp/B00CJ6OL6M?ref=myi_title_dp
In addtion, in order not to delay you again, we want to give some explaination here. We don’t sell above items now, but there are still other sellers. If it is one of above items, please kindly find the seller information in order information. It should show”Sold by DROK or sold by xxx” Because only seller can deal with order directly.
Any more questions, please kindly let us know.
Best regards.
Hello, wondering if you have product #2001710003 with the temprature sensor wire in stock? I had previously ordered but you gave me one with just two wires and had told me you had no stock of temprature sensor. Thanks otto
Hello Otto，
Now 2001710003 is in stock. https://www.amazon.com/dp/B07759SLYP?ref=myi_title_dp&th=1
The one without temprature cable is this one. 200389, we are not sure if you get this before. It actually has built-in temperature sensor.
Best regards.
I represent a Vending Machine Manufacturing company and planning to use one of your amplifiers in our product line. I am looking for a local representative in Dallas,TX USA
Hello Vishal Dali,
Would you please kindly tell us which amplifier it is? We don’t have other seller channel in USA but Amazon.com.
Any more questions, please kindly email us.
Best regards.
I placed an order 2 weeks ago I have not seen it yet and I don’t see any US number to call to get any answers.
Please tell me my order 4036 will arrive at my location;
Thansk Jay Mcleran
Hello Jay H Mcleran,
Your tracking number is LT371622797CN （EUB）
Best regards.
I just installed a Dro-bt sku #200367, the Bluetooth light keeps flashing rapidly but does not show up on any devices to connect
Hello Tom P,
Quick flashing means it is waiting for a connection. Could you please tell us what kind of devices you are going to connect?
Best regards.
I just received from amazon your DC Buck Module, DROK Adjustable Step Down Voltage Buck Converter 6V-32V 30V 24V 12V to 1.5-32V 5V 5A LCD Power Supply Volt Reducer Regulator Transformer Module Board with USB Port Protective Case but the case kit contained to top clear plastic plates! Should I send the kit back to Amazon or will you send me the bottom plate?
Hello Mark Wells,
Thanks for writing in.
Do you mean you only receive top plastic plate? Could you please offer your order ID? Please kindly send your order ID to Service@droking.com
Best regards.
Hi DROK. I ordered a DC buck converter and on the second day I cracked the screen. Is there any way for me to order the lcd screen and replace it myself?
It’s a 22 pin screen with backlight.
Hello Jordan,
It’s regretted to hear that. We don’t have screen replacement.
Would you please kindly tell us which buck converter it is? Product link or order ID wil be helpful.
We can try to check if it is easy for you to buy a screen.
Best regards.
I purchased a DROK Self-Lock Wireless Relay Garage Door Remote Control 12V DC 1 Channel Switching Board and after connecting power and ground to the appropriate contacts the relay does not latch contacts O and D. The Led on the board is lit and the remote control lights up but pressing the remote control does not do latch the relay.
Hello Erick,
As per your description, we find out this item 090173
Is it convenient for you to show us wring by images? And is there any barriers? how long is the remote distance?
You can send image here or to our servie mail. Service@droking.com
Best regards.
I have a drok signal generator how do I get power to it
Hello Randy,
We have many signal generators. Could you please send us product link so that we an confirm which one it is?
Best regards.
can you send me a diagram on how to connect
160W 2 Channel DC Motor Driver Module Positive Negative PWM Speed Regulation Optocoupler Isolation Dual H-bridge Motor Controller
to a 6 channel rc receiver and what else do i need to control each motor individually i am building an rc dozer. Thanks
Hello Roman Cepeda,
Thanks for writing in.
We are sory we don’t have specific wiring diagram for rc receiver. You can refer to the wiring diagram in this instruction 200206
As long as you hook it up correctly, you can send individual signal to control each motor.
Best regards.
I just purchased your USB to 9V, 5V to 12V with LED Voltmeter display. I need the output to have a negative center instead of a positive center post. What can I do to reverse the polarity? Do you make a polarity reversing adapter?
Hello Charles Freedenberg,
You should try polarity reversing adapter, that is the simplest method.
We don’t make adapter, but it is easy to find it.
Any more questions, please kindly contact us.
Best regards.
I must say that I am very pleased with your products. I have just purchased my 3rd item, Digital Meter USB tester 300043 but did not receive the case that it usually comes in. It may seem trivial to some but to a meticulous person like myself I take pride in my items and take very good care no matter what the price was! The card reads “WE WOULD MUCH RATHER LEAVE YOU SMILING”…well I would like to continue you smiling as well as making more purchases. But I need my protective case, Thank You.
Hello Regan Luckie,
Sincerely apprecaite your supporting.
May I know what kidn of case it is? Is it packing box?
Best regards.
It came in a cardboard packing box. My previous one came in tin case.
Hello Regan Luckie,
We have checked with warehouse, 300043 is not packed with tin case.
We wonder if ther are something wrong on model number. This is 300043, https://www.amazon.com/dp/B00J3JSEG6?ref=myi_title_dp
Best regards.
The previous meter I received came in an aluminum type of case that read DROK across the top of the case. This one came in a small cardboard box with instructions and card inside. I also just received my usb um25 and that even came inside aluminum case.
Hi, I’ve purchased on Amazon “DC Speed Controller, DROK DC 6-90V 15A DC Motor Controller, Universal 0.01-1000W 16kHz PWM Stepless Brushed Motor Control, Variable Speed Control Generator Kit with Output Voltage LED Display”.
I want to run it in a 12 V car with a ground (negative) shared between battery and the motor. When I connect negative (-) motor and negative (-) battery together, and (+) battery to the battery and (+) motor to the motor, the controller stops working and always puts out +12V to the motor (+) regardless of the position of the knob.
How to wire it with a common ground (-) shared between the battery and the motor? If it can not be done with this product, do you have another regulator which allows connecting (-) battery and (-) motor?
thanks
Hello George,
Thanks for writing in.
We are sorry we don’t have other regulator can do that. When you connect motor negative to battery negative, current flows through to battery directly instead of output control circuit. It can’t work in that case.
Any more questions, please let us know.
Best regards.
I have a 200139. for some time it worked fine. Now the voltage value is wrong. for example 10 volts reads 18, 13.3 reads 22.71
what can I do?
Hello Tom Hoflich,
Could you please kindly try to calibrate meter?
1. Connecting power supply (20V/1A) and load.
2. Short connect two calibrating spots (Open the back cover, you can find two holes which
marked by “W” on the edge of board)
3. Turn on the power supply.
4. When the screen display changed from “CAL—“ into” —PASS”, that means the calibration is finished.
Please kindly notice, it must be exactly 20v/1A power supply.
Any more questions, please kindly let us know.
Best regards.
Thanks. That worked.
Curious about why it became “uncalibrated”
I just bought a battery power display unit. It works well, however the instructions by the mfg. co. are hard to follow. The writer is not fluent in English and I am not sure I have programmed it correctly for proper read out. If you could check to make the instructions clearer it would be easier for the customer. Thanks, Fred Puhlfuerst
Hello Fred Puhlfuerst，
We are sorry it is hard to confirm which item it is. Could you please kindly offer product link or tell us the SKU number in instruction?
Best regards.
How do I change the C to F for temperature ?
Battery power indicator panel
X001UGBYJZ
Thanks
Hello Morgan，
We are sorry it can only show celsius temperature。
Best regards.
Do you make an extension cable for the Hall effect sensor for your model WLS-PVA200 DC Current/Voltmeter? (0-300V, 0-200A)
The one included with this meter is too short for my application, it is only 140mm long.
Thanks!
Hello Mike A,
Thanks for writing in. Is it this item? 2001712003
We are sorry we don’t have extension cable. If you need a longer cable, it must be shield cable, otherwise it will have influence on measurement.
The connector specification is XH2.54-3P.
For any more questions, please kindly contact us.
Best regards.
My name is Alan Campbell and I am looking for a power solution that is 28VDC input 5VDC output @ 216W. It can be in 2 modules but I would like them to be sealed. You can reach me @ acampbell@tristardes.com or (508) 344-1378
Hello Alan Campbell,
To get 216w output, that means output current should be 43.2amps. Is it right?
We are sorry so far we don’t have converter can meet this application.
Best regards.
HI I JUST BROUGHT YOUR 0.56” RED LED DISPLAY DIGITAL TALLY COUNTER .
I HAVE VERY LITTLE KNOWLEDGE FOR DIGITAL ELECTRONICS.
I NEED TO KNOW WHAT TYPE OF DC BATTERY TO USE WITH THIS ITEM
AND HOW TO INSTALL IT.
CAN YOU PLEASE SEND ME THE INFORMATION
tlchatmandesigns@yahoo.com
thanks
Hello Thurman Chatman,
Thanks for writing in.
There are several kinds of simialr items, could you please check if it is this one? 100262
Best regards.
I’ve got the XY-FZ35 Electronic Load. If functions well in manual mode, but any character sent over serial gets the response “fail”. Several TTL/Serial interfaces have been tried and I’m wondering if maybe the serial mode is disabled? If so, how is it enabled?
Hello Paul Hupman,
Thanks for writing in.
Is it this item? 200392
For this item, baud rate is 9600 bps. Please kindly check if the format is in accordance with instruction, https://www.droking.com/cs/wp-content/uploads/2019/04/200392-instruction.pdf
If it still can’t work, would you please kindly show us operation by video?
Best regards.
Digital Multimeter Charge-Discharge Battery Tester 200320
Need user manual that a user can use. This is in a finished project and I cna’t work it!!!!!!!!!!
Hello jim ball，
Sorry for inconveninece may cause.
We have pdf on Amazon product page. If paper instruction doesn’t come with item, please kindly download pdf.
Here is link,https://images-na.ssl-images-amazon.com/images/I/B1U5lij+ATS.pdf
Any more questions, please kindly contact us.
Best regards.
Hello,
I bought a L298N Motor drive (X000HR791F)
seems only one side is working (right side).
could there be a problem with the EnA?
thank you
Hello Émile Caron,
Thanks for writing in. Is it this item? https://www.amazon.com/dp/B00CAG6GX2?ref=myi_title_dp
Do you mean The output A can’t work? Could you please kindly tell us more details about operation? How is it if you only enable output A?
If possible, could you please take some images or video to show the whole connection?
You can upload images here or send it to Service@droking.com.
Best regards.
I need to purchase a 3 phase BLDC controller to use with a Maxon motor with hall sensors. I found your DROK DC 6-50V Three-phrase Brushless Sensorless Motor Control Board BLDC Motor Driver Regulator Monitor 380W High Power Motor PWM Duty Cycle Speed Controller Module with Heat Sink, PLC Control Switch on Amazon. Description includes this comment: The brushless motor speed control is fit for DC brushless three-phase motors without Hall sensor. However, I see in diagram that it has positions for 3 hall. Can I solder in pins and use them for Hall sensor?
Hello Patrick Fields,
This item can’t work for hall sensor motor. We are sorry there is no way to change it.
Any more questions, please kindly contact us.
Best regards.
Hello
I recently purchase a QS121CBA-150W I’m in Australia it took 3 weeks to arrive and I tested it on my bench before installation and can’t get it to work it was in a bubble wrap package but still has damage I suspect it was damaged before it was sent to me. Can you help I need it to finish a project before the end of May.
Regards Mark
I have pictures but can’t load them
Hello Mark Patterson,
Thanks for writing in.
Is it this item? ASIN: B00C9UAE28, https://www.amazon.com/dp/B00C9UAE28?ref=myi_title_dp
Would you please tell us what problem it is and more deails about operation? You can send pictures to Service@droking.com.
We will find solutin for you once confirm the problem.
Best regards.
Hello,
I am doing some experimenting on low-voltage, hobby micromotors. I want to do some careful voltage control ( 0-12vdc). I just took delivery of your:
DC Motor Controller 12V, DROK DC 6V~90V 10A Speed Controller 500W Universal Forward and Reverse Control PWM Module Speed Regulator 16kHz Multistage Stepless Motor Speed Governor with LED Display Knob
via Amazon.
I particularly am drawn to your digital readout on this model.
What should I use for input? Batteries, alternate DC supply??
Thank you,
Hello Philip Deal,
Thanks for writing in.
You can use any DC power supply, as long as it is stable.
Best regards.
How to program YB28VTM-W Digital waterproof meter power display to (6) 6 volt batteries (36 volt system). Directions or choices do not include 6 volt lead/acid batteries?Also how does this unit turn off as not to draw down batteries?Thanks,John G.
Hello John Gressman,
Thanks for writing in.
Please program it according to your total battery voltage. As it is 36v, please select 12v in 2-b menu and program 3 in 3-c menu.
This item doesn’t have on/off function. You can add a switch for it.
Any more questions, please kindly contact us.
Best regards.
Hello. I purchased the DROK TPA3116 HiFi Dual-channel Stereo Audio Amplifier from Amazon. Can you please tell me where to find matching JST connectors for the 3-pin audio and 2-pin voltage terminals? I searched but cannot find exact matches anywhere.
Hello Keith,
Thanks for your order.
Is it this item? 200212
The connectors are XH2.54 3P and XH2.54 2p
It is easy to find that. If there are any questions, please kindly contact us.
Best regards.
I am trying to find out status of my order as follows:Order ID: 4953Date Added: 30/04/2019Payment Method: PayPal Express Checkout
Hello Bill Griffin,
Thanks for your inquiry.
Order#4953 has arrived in US. tracking number: LT638543440CN (ePackect)
Any more questions, please kindly contact us.
Best regards.
I ordered your timer relay from Amazon. The specs say that it can be powered from AC voltage. Following the instructions that came with the product, I connected the input terminals to my house power, 115 volts, 60 cycles. When I plugged it in, there was a bright flash and the input terminals were charred. It is as though the voltage was way too high for the product. The power supply in the unit was labeled for 85 -265 volts. However, the printed circuit board, at the connection terminals was labeled: VCC and GND. Amazon is sending me a replacement product. However, I want to be certain that the same failure will not happen again. I very carefully checked my wiring to be certain I did not make a wrong connection. It looked correct to me. I purchased this particular product because it will be easy to use for my application. I have a Koi fish pond and, to prevent food from being drawn into the skimmer pump, I turn it off while the fish are eating and then turn it back on in about 15 minutes. Your product seems perfect to automate that cycle. I don’t have 12 volts available, nor do I wish to add a power supply for that. I hope to power your delay timer directly from the 115 volts supplying the pump. Please let me know that I can power the unit that I purchased with 115 volt 60 cycle power. Thanks.
Hello David Williams,
As we have many kinds of relay, we are sorry we can’t confirm which one it is.
Would you please tell us the ASIN number or product link? And it would be appreciated if you can show us your connection.
You can upload pictures here or send it to service@droking.com.
Wait for your reply sincerely.
Best regards.
I sent the following comments in an email with a wiring diagram attached. However, it was rejected with a response in Chinese characters that I do not understand. I believe that the diagram may have caused the problem. It was a PDF document. If you still need it, how can I send it to you? My first message to you had the terminals mixed up – my fault. The following description is correct. Thank you for your help.
I am not not sure what happened to my relay. I claimed, in my last message, that I had connected the source AC power to the left most terminals. I could not have done that and don’t recall how those terminals got charred. I have created a drawing of my intended wiring to your product. I used the instruction sheet that came with the product and added my wiring to it. I’ve attached that diagram to this email. Before I plugged the product into the AC power, I carefully checked my wiring to be sure that I hadn’t made a mistake. It was according to the attached diagram. Even if I had wired the AC power to the relay contacts instead of to the power input, nothing should have happened because the relay is normally open. Correct? In that case, the input power would have been connected to the load terminals (I used a desk lamp to test the setup instead of the heavy motor load). Since that would mean that the timer had no power, the relay should have remained open. What could have happened? Please let me know because I now have the replacement product sent by Amazon and I don’t want to destroy it. I spent my entire career in electronics and have degree in electrical engineering. I do know what I am doing. Any advice that you can give would be greatly appreciated.
David Williams
Hello David Williams,
Thanks for your reply.
As we are not sure the item you ordered, it is hard to give proper answer. There should be a SKU number in our instruction; could you please tell us that?
Regarding to your drawing, did you sent it to service@droking.com? If it can’t work, would you please try to sent it to the other mail address, longqipro@foxmail.com?
Wait for your reply.
Best regards.
Here is the SKU number from the instruction sheet: 2001711005. I did use service@droking.com which rejected my diagram. I’ll try sending it with the alternate address that you suggest.
David Williams
Hello,
I purchased 10 pcs of the Drok Battery Meter, Blue Light LCD Battery Capacity Monitor.
Only 3 pcs are Back panel mount dispays, 7 where front panel mount versions that are unuseable for me.
What will you do?
Thanks in advance.
Freddy
Hello Freddy H,
Thanks for writing in.
As per your description, is it this item? https://www.amazon.com/dp/B01LQ7MT4K?ref=myi_title_dp
To check what wrong it is, is it convenient for you to show us how it is? And the label number on pacakge.
You may try to upload picture here or send it to service@droking.com.
With your help, we will find solution as soon as possible.
Best regards
Hi,
two weeks ago I bought this UPS: https://www.amazon.it/gp/product/B07CP6NVYV/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1 marked MODEL 5310.
As there is no instructions leaflet in the box, could you please provide me with PDF instructions or at least give me information on:
– LEDs behavior and meaning
– purpose of SW1 microswitch
– behavior of the two TEST terminals
Thanks in advance
Federico
Hello Federico M.
Thanks for your order and sorry for inconvenience may cause.
As this is semi-manufactured modlue, factory doesn’t have paper for it. Here is simple pdf for you, https://www.droking.com/cs/wp-content/uploads/2019/05/200188.pdf
TEST terminal and SW1 switch are not main parts. TEST terminal is used to check if there is electric supply. If the terminal doesn’t have voltage, that means it doesn’t have electric supply.
And you can switch to battery power manually by pressing SW1 switch. But it will switch automaticlly when electricity cut off.
For any more questions, please kindly contact us.
Best regards.
Hello Drok, thanks for the comprehensive and very quick reply!
Federico
Hi Drok,
I need to mount the power supply vertically, resting on the long side.
The two long sides differ in that one is full of venting holes, while the other one has no venting holes but has three threaded holes for mounting screws.
I imagine the that when mounted vertically, the former, with venting holes, should be up, and the latter should be down, is that correct?
Should I apply any derating when the power supply is vertically mounted?
Thanks in advance
Federico
Hello Federico M.
as long as the venting holes are not blocked, actually installation is flexible. You can install it as per what you think.
Best regards.
Hi,
I bought
DROK 090077 Small Little DC Digital Voltmeter 2-Wire 0.56″ DC 3-30V Red Bright LED Car Motor Panel Mount Meter 5V 12V 24V 27V Solar Battery Volt Accurate Power Monitor Gauge
on April 23 on amazon for $5.49, to measure the voltage of my kids 18v power wheels battery, I have the negative connected to an on off switch, and will turn it on for a few seconds at a time to check the voltage (probably 5 to 10 times per battery cycle). I have cycled the battery 5 to 10 times since I installed it. So it has a small amount of use on it.
It stopped working last week, would you be able to replace it?
This is the second one that failed for me, the first was from Smakn, and it was exactly the same except the display was blue, and failed after a short time. Is there something I’m doing that is causing these voltmeters to fail? Should I connect the positive wire to the on/off switch instead of the negative? Is there a particular component that is failing that I can replace?
I did calibrate using the the screw on the back of the unit, but it did not need much calibration.
Thank you,
Ed
Hello ed,
Thanks for writing in.
As we don’t sell this meter since March, we are sorry your order may not be sold by us directly.
You can try to contact seller for replacement. As supplier, we would like to try our best to offer technical support.
Could you please tell us what kind of load is connected to battery? Is it possile there is power ripple or voltage change? And did you try check the actual battery votlage?
Best regards.
My recent purchase of your buck converter arrived. I hooked it up. Your voltage adjustment control does not work. Obviously I purchased to reduce my 12v supply IN to be 5 volts OUT.
I bought your converter, I paid shipping both ways, I still have nothing. I will ship this thing back to you this Monday.
Fix this …. then TEST it! ONLY THEN …. SEND ME A VERIFIED WORKING CONVERTER that I paid for.
Steve Wilson
1725 Lindenmeier Circle
Loveland CO 80538
Hello Steven Wilson，
Thanks for wriitng in and sorry to hear that.
Did you order it throught Amazon? Would you please kindly offer a product link so that we can confirm which one it is?
With more inforamtion, we can find solution as soon as possbile.
Best regards.
I’m wanting to purchase one of your DC converters but need a voltage follower. That is as the input voltage varies and I want the output to do like wise. Not a constant set output voltage. Can you tell me if you have some and what item numbers they would be. I have looked on Amazon and found several like the DC 3-34 3amp with LED reading voltages but it doesn’t indicate whether it is a follower currant output.
Regards
John
Hello John Pissey，
Thanks for wrirting in.
It’s regretted so far we don’t have such converter.
Best regards.
Hello Drok,
I purchased
Buck Boost Converter Display, DROK Buck-Boost Board DC 5.5-30V 12v to DC 0.5-30V 5v 24v Adjustable Constant Current Voltage Step UP Down Voltage Regulator 3A 35W Power Supply Module.
Nice looking unit,
QUESTION:
How does one turn off the LCD display when not in use? It is draining my batteries. Thank you. Robert – rtrisk@gmail.com
Hello Robert，
Thanks for writing in.
We are sorry LCD display can’t be turned off. You can try to add switch to control input power.
Any more questins, please kindly contact us.
Best regards.
I’ve recently purchased, 12 Volt Timer Relay, DROK 0.1s to 999min 50mA 4-Mode On-Off Automotive Digital Delay Relay, Electric Delay Timer Switch, Cycle Time Delay Module with LED Display, Manufacturer Number 300473. Amazon is showing no stock, nor is your website. I’m not interested in similar models, can DROK still acquire the 300473 model number and if so what is the lead time. I will need 30 here in the upcoming future
Hello Matt,
Thank for writng in.
300473 is out of stock now, it will take at least one week to prepare items. And we need to ship items to Amazon warehouse.
So it may not be available soon. If it is urgent, you can order directly from our website.
Any more questions, please kindly contact us.
Best regards.
I have purchased the following from Amazon: AC Voltage Display, DROK 3pcs Digital LED Display Voltmeter AC 60-660V Voltage Meter Monitor 110v 220v Volt Detector Green Red Yellow Signal Indicator Light Panel.
Is the lamp shade Ultra Violet resistant?
Hello,Greg May
Thanks for your order.
As per product title, it should be 200333
It is not Violet resistant.
Best regards.
DC 10/50/100 A Voltmeter Ammeter LED Dual Digital Volt Amp Meter Test Gauge Tool from ebay please would you send me wire diagrams as i did not get any thank you
kind regards
david clark
Hello david clark,
Thanks for writing in.
As the item you showed is not from us, we are not sure if it is the same one. You may refer to our 100016 wiring diagram.
Best regards.
Hi, I got 2 drinks pruduct and I need assistan understanding the codes ie: cv codes (u-set, I-set,s-ivp etc special with a-ocp) can you provide way of hnowing the message of the cc-cv?
Hello Benjamín，
Thanks for your messsage.
As we are not sure the product you mean, it is hard to give accurate answer. Would you please kindly offer a product link or other inforamtion?
Best regards.
Looking for availability on the following. I can find a PN for these.
5pcs Mini Voltage Reducer DC 4.5-24V 12V 24V Step Down to 5V Buck Converter Board 3A Volt Step-Down Transformer Power Supply Module
How to set for a 36 volt cart
Hello John，
Are you talking about this item? https://www.amazon.com/dp/B0758ZTS61?ref=myi_title_dp
Best regards.
Hello Johnny Richard,
Would you please tell us which item you mean?
Best regards.
Hi there,My order #5523 placed as of 12. June, seems to stuck somewhere.I chose DHL service to deliver, but the products have not delivered to me yet.I’ve received Mail that one of products I ordered was out of stock and guided me chose alternative ones. And I told you which product I need by replying to you as of 17.June.I’d like to know what’s going on there.
Hello B.K.Jeong，
About this order, we doesn’t get your response yet. We are sorry we can’t decide refund or arrange other repalcements.
Please kindly let us know which one you prefer so that we can ship your order as soon as possible.
Best regards.
I installed a vac9010 meter and I can’t get the amphours to count down, along with battery scale. I have the hours set at 400, battery shows full and meter counts up when running on battery power. What am I doing wrong
Hello Dave，
Did you set OAH parameters?
And please kindly check if current direction is correct. From the front of sensor to the back, capacity will decreases; From the back to the front, capacity will increase.
Any more questions, please kindly contact us.
Best regards.