DIGITEN 0.56" Green DC 4.5-120V Digital Voltmeter Voltage Measurement 2 Wires Gauge LED Panel Measure range:4.5-120V Power supply: 4.5-120v, directly use of the test battery as a power supply Measure accuracy:1V Display mode: Green three 0.56 inch LED digital tube Dimensions: 48 * 29 * 22mm