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  • Drok
    Keymaster
    June 8, 2021 at 10:05 am
    Post count: 2971
    in reply to: Thiele-Small Parameters (TSP) for DROK 4.5 Inches 4 Ohm HiFi Subwoofer Speaker #73029

    Hello，

    Please kindly refer to below diagram.

    Drok
    Keymaster
    June 8, 2021 at 10:00 am
    Post count: 2971
    in reply to: Wiring Ammeter Dual #73028

    Hi,

    Could you please send images to service@droking.com?

    Best regards.

    Drok
    Keymaster
    June 8, 2021 at 9:59 am
    Post count: 2971
    in reply to: I have a model #100398 DC panel meter. It's voltage range is set for 600v #73027

    Hi Paul j Livingston,

    We are sorry factory can’t make customized item for small amount. And the  cost for customized item will be higher .

    Best regards,

    DROK

    Drok
    Keymaster
    June 7, 2021 at 10:03 am
    Post count: 2971
    in reply to: I have a model #100398 DC panel meter. It's voltage range is set for 600v #72924

    Hi,

    We are sorry voltag range can’t be modifyed by user.

    Best regards,

    DROK

    Drok
    Keymaster
    June 7, 2021 at 10:01 am
    Post count: 2971
    in reply to: DROK A/C PANEL METER AMP READING IS NOT ACCURATE #72923

    Hello ROBERT LO,

    Did you check the current reading with other meter?  Could you please tell us how large the actual current it is?

    And please kindly notice this meter only show active power.

    The computational formula for Active power : P=U*I*cosφ (cosφ is power factor)

    If the power factor of load is  equal to 1, the Active power can be equal to U*I .

    But when power factor is within  0-1, you can’t calulate current  directly by  formula U*I.

    Best regards,

    DROK

    Drok
    Keymaster
    June 7, 2021 at 9:41 am
    Post count: 2971
    in reply to: manuals for your product #72917

    Hello robert grondona,

    We have pdf manual on Amazon product details page. It is on “Product guides and documents”

    If you can’t find it, please click on the link directly. https://m.media-amazon.com/images/I/B1ubSSVdpyS.pdf

    For any more questions, please let us know.

    Best regards,

    DROK

    Drok
    Keymaster
    June 7, 2021 at 9:37 am
    Post count: 2971
    in reply to: Wiring Ammeter Dual #72913

    Hi, mark

    Could you please kindly show us your connection and other details so that we can check futher?

    Best regards,

    DROK

    Drok
    Keymaster
    June 4, 2021 at 8:06 am
    Post count: 2971
    in reply to: Wiring Ammeter Dual #72610

    Hello mark，

    Would you please offer product link or order ID so that we can confirm which item it is?

    And would you like to show us the whole connection by image? If it is hard to show that by image, you can try to draw a simple diagram. We hope to check where the wires go to.

    Best regards.

    Drok
    Keymaster
    June 2, 2021 at 8:55 am
    Post count: 2971
    in reply to: DC Booster Not Working for me? #72402

    Hi mikey,

    Did you check  the output current fron our converter? To get 48v/12A output ,  input power can’t be lower than 576W.

    Best regards,

    DROK.

    Drok
    Keymaster
    May 29, 2021 at 8:39 am
    Post count: 2971
    in reply to: 12v-20a Voltage Stabilizer #72006

    Hello Dave,

    Could you please tell us the voltage range from charging system?

    Drok
    Keymaster
    May 27, 2021 at 8:47 am
    Post count: 2971
    in reply to: Product Inquiry #71812

    Hello,

    For 5 or 10 pcs of#090649, you can refer to the price in our website.

    https://www.droking.com/480W-PWM-Stepless-Speed-Control-Module-DC-12-60V-Motor-Speed-Controller-10A-Pulse-Width-Modulation-Module-Speed-Regulator

    5 or more US$6.99
    10 or more US$6.75
    In general, it will take 3-5 working days to prepare items after receiving order.  You can also place order directly from our website.
    Best regards,
    DROK
    Drok
    Keymaster
    May 26, 2021 at 7:24 am
    Post count: 2971
    in reply to: Replacement for your 100115 meter #71702

    Hi Carroll Jolly,

    We stop selling 100115 on Amazon since several years ago.  But you can buy it from our website, only red color is available.

    #100113, https://www.droking.com/Mini-Voltmeter-DC-0-4.3000V-33.000V-Red-Led-Digital-Voltage-Meter-DC-12V-24V-Voltage-Tester-Volt-Panel-Meter?search=100113&description=true

    Best regards,

    DROK

    Drok
    Keymaster
    May 25, 2021 at 8:27 am
    Post count: 2971
    in reply to: Calibration voltage for JS-C33 battery Monitor? #71606

    Hello Dennis Burke,

    Only when there is  large error on voltage reading, you need to calibrate voltage reading.  Did you have problem on voltage reading?

    Any adjustable power supply can offer 20v voltage.

    Best regards.

    Drok
    Keymaster
    May 24, 2021 at 9:36 am
    Post count: 2971
    in reply to: MPT-7210A mppt charge controller input ratings #71494

    Hello Sajeesh，

    Could you please tell us which item it is？ Is it 200322?

    And only output voltage can be set, input voltage is as the same as what you connect.

    Best regards.

     

    Drok
    Keymaster
    May 20, 2021 at 8:54 am
    Post count: 2971
    in reply to: VAH45020S Bidirectional DC Multimeter #71073

    Hello，

    Yes, BAT and BPC  are both need to be set. Meter only record the capacity  flows through it, it can’t check the  battery capacity.  If you don’t set  BAT and BPC parameters, it will not show correct percentage.

    Did you confirm BPC is set successfuly? Would you like to show that by video?

    Best regards.

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