1pc DC5-30V Voltage Meter 0.28 Inch LED Digital Voltmeter Auto Car Mobile Power Voltage Tester Detector Red Green Blue Yellow

High-concerned chemical：None Origin：Mainland China Model：0.28 inch Working principle：electronic watt hour meter Power circuit：DC ammeter Type of watt hour meter：reactive watt hour meter 2wire working voltage：4.040v with reverse connection protection function 2wire detection voltage：0.040v 3wire working voltage：4.040v with reverse connection protection function 3wire detection voltage：0.0100v Working current：20ma Display mode：0.28 "led, Color：red yellow green blue

High-concerned chemical: None Origin: Mainland China Model: 0.28 inch Working principle: electronic watt hour meter Power circuit: DC ammeter Type of watt hour meter: reactive watt hour meter 2wire working voltage: 4.040v with reverse connection protection function 2wire detection voltage: 0.040v 3wire working voltage: 4.040v with reverse connection protection function 3wire detection voltage: 0.0100v Working current: 20ma Display mode: 0.28 "led, Color: red yellow green blue