Item Name: HW-811 Mini Digital Voltmeter Ammeter DC 100V 50A with Shunt (Red+Blue) Newly. Smart TV Box Android Quad Core HDMI 1080P Wifi Streaming Media Player UK
HW-811 0.28 inch Mini Digital Voltmeter Ammeter DC 100V 50A Dual 3-Digit LED Display Volt Amp Voltage Current Panel Meter+ Shunt Resistor
Descriptions:
PIN descriptions:
a. + (thin red line): power supply positive (connected to DC power supply positive)
b. - (thin black line): power supply negative (connected to DC power supply negative)
c. v (thin yellow line): positive of the tested power supply (connected to the positive pole of the power supply that needs to be tested)
d. Thick red line: to negative of the load
e. Thick black line: to negative of the tested power supply
Troubleshooting:
a. The voltage display is normal, while the current shows 0.00 or 0.0
Make sure that the thick black wire is connected to the negative pole of the battery and the thick red wire is connected to the negative pole of the load. (Note that the discharging wiring is not the same as charging wiring, see the final concept of load and power). (Original imported chip is used in the meter. Very strict test and calibration have been carried out. 100% no quality problem Guarantee before leaving factories. In case of current display 0, it is mostly due to incorrect wiring, please check wiring carefully.)
b. Incorrect current display
If it is directly
