Digital Voltmeter Ammeter DC 100V 50A

QUICK OVERVIEW Operating Voltage: 5V DCCurrent Consumption: <60mATesting Voltage: 0-100VTesting Current: 1-50AEasy to read even in dim light This is 0.28-inch Digital Voltmeter Ammeter DC 100V 50A LED Amp Volt Meter With Shunt. This meter will measure up to 100 VDC with a 0.1-volt resolution. One thing to note is, this meter has 2 wiring harnesses. One harness is to provide power for the meters, that’s the 2 poles with a RED and a BLACK lead. Small size, portable, the magnitudes of voltage and current are displayed on the same screen at the same time. This can be supplied anywhere from 6 volts DC up to 30 VDC. This is a separate power supply that is isolated from the source, it is possible to use the same supply but it seems to affect the amp meter reading. The 3 wire harness is used for a ground that connects directly to the battery or supply ground of the load. Note: There are two different wiring variants (i.e. yellow wire and Green wire ) with the same working functionality is available which will be shipped randomly. Use the followings guidelines according to your version. CASE 1: Onboard Wiring Instructions for “Yellow” Wire connection 1. Thin Red Wire (VCC): positive pole of power supply input (4.5-30V)(Note: if the measuring signal is less than 30V and the power is adequate, can be the power supply of module) 2. Thin Black Wire (GND): the negative pole of power supply input (4.5-30V, common ground with measuring signal) 3. Green Wire (VIN): positive pole of measuring signal input (0-100V)