Hello Operations，

Would you please firstly let us know how much you need?

Factory has requirement on customized item. It is hard to arrange production if quantity is small.

Best regards.

Hello Ahmed，

If adjustment is no problem, the displays circuit may be damaged. As we can’t check it person, it is hard to said which component is damaged. In general, if the problem is on display circuit, it is hard to fix it.

Best regards.

Hello,

Please kindly notice CT can only hold one hot wire. And please connect AC power supply to X1 and X2 terminal, otherwise metr can’t p0wer on.

Best regards.

Hello JUN TAKAHASHI,

Did you check the rate current your load need? If input is  12.14v/11.96A, that is about 145W input power, output power is also closed to 145w. No matter how you set voltage and current,  it is impossible to over 145 w.

Best regards.

Hello Jose Munoz，

Please kindly confirm if it is this item 2001709014

Do you mean the input drops to 8-9 vdc when connected load?  Or from the beginning, is it 8-9v input?

Could you please kindly tell us the input voltage/current before connecting load and output setting? And we are not sure the maximum imput 53 vdc you mean. If two 12v solar panels are connected in parallel, the totlat voltage should be still around 12V.

If you can, could you please kindly show your issue by images or video. In that way, we can check carefully.

Best regards.

Hello Mike,

We have received your email. For this item 200322, max input current is 15A, so 16 A is not  available.

Input voltage range:  DC 12-60v.

Best regards.

Hello Sheldon Wright，

According to your description, we think it should be  200219

If no-load current is not zero, please move yellow cursor to OUT, then hold OK button for 3 seconds.

Voltage calibration:

a  DC Variable Power Supply, an multimeter
1. Hook up the meter with power supply.
2. Hold “OK” button and power on meter. After power on, please release button after 3 seconds. Then it will enter setting interface.
3. Please move yellow cursor to “Mode” and short press OK button, then move the yellow cursor to “10.V” and increase the voltage of adjustable power supply to 12V. Then press up or down button to adjust voltage reading of meter until it is the same as actual output voltage.
4. Next, please press “OK” button to move the cursor to “40.V”; increase the voltage of power supply, this voltage value can be any one between 32V-40V; then press up or down button to adjust voltage reading of meter until it is the same as actual power supply voltage.
5. Please short press “OK” button again to move to”10.V”, and repeat the above two calibration for 12V and 40V. When voltage reading of meter come very close to actual value, the calibration is finished. Then press “OK” to move the cursor to “Save” to save the setting; at last, power off and then power on again.

Best regards.

Hello Bill Ravens，

We have uploaded pdf manual on Amazon page, here is the link:

https://images-na.ssl-images-amazon.com/images/I/B1pR7CPThIS.pdf

For any more questions, please kindly contact us.

Best regards.