LIROYAL Mini 3 Wires 0.28" DC Volt Meter 0~100V Digital Display Voltmeter Gauge LED Voltage Detector Panel Meter Voltmeter Measuring range:DC 0~100V three-wire access Operating voltage:DC 4.0~30V Measurement accuracy:1 %(+/- 1 digit) Display:Three 0.28 " LED digital tube Display Color:Random