7 IN1 Digital OLED Ammeter Voltmeter Voltage Current Power Energy Car Motorcycle Volt Meter

lcr meter  multimetre вольтметр мультиметры miernik elektryczny fluke multimeter analog multimeter тестер транзисторов

1

Using Isolated Power Supply

The two power supplies must be isolated and don’t connect any load. The highest voltage of isolated power supply is 20V

1

Using DC-DC converter to power supply

The black thin wire connects nothing and you should use insulator wrap it to avoid short circuit. The DC-DC converter must be common cathode structure.

2

Using system to power supply

The black thin wire connects nothing and you should use insulator wrap it to avoid short circuit.

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On Dec 29, 2023 at 01:04:14 PST, seller added the following information:

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