B5 pcs Mini DC 0-99V 3-Wire Voltmeter LED Display Volt Meter Digital Panel Meter ReviewbP PP 5 pcs Mini DC 0-99V 3-Wire Voltmeter LED Display Volt Meter Digital Panel Meter POperating voltage: 5 ~ 25VPOperating Current: Display: 0.56 "LEDPmeasurement range:0 ~ 99.