1Equipped with 5 wires, 2 power supplies, and 3 measurements, convenient to connect to the wiring of car, battery car, and motorcycles. 2The test voltage of this meter is 0100V, and additional power supply is required. The power supply voltage range: DC4.530V, it will not burn if reverse connection. 3Used to monitor the battery voltage and grasp the battery voltage status in time. It can also be used for other product voltage and current measurement purposes. 4This dualcolor dualmeter is small in size and can display voltage and current on the same screen at the same time. 510 Ampere voltage ammeter tester with 3&8209;digit blue + red dual LED display.Condition: 100% brand newItem Type: Current and voltage meterMaterial: plasticColor: As pictures shownSize: Approx.4.3x2.9x1.8cm/1.7x1.1x0.7inPower Supply Voltage: 4.5-30VWorking Current: 1 x Current and Voltage Meter1 x Power Supply Connection Line1 x Measurement Connection Line