SMAKN YELLOW 0.28" Mini 2 Wire Dc Voltmeter 2.5~30v Digital Display Voltmeter Gauge LED Voltage Detector

Cutting size:23.5mm x 10mm Mounting holes distance:28mm Measuring range:DC 0~100V three-wire access Operating voltage:DC 3.0~30V Measurement accuracy:1 %(+/- 1 digit) Refresh Rate?about 500mS/times Display:Three 0.28 " LED digital tube Display Color:YELLOW Operating Temperature:-10 °c ~ +65 °c Wiring: Red: Power Supply +,(3.0~ 30V DC) White: Measure Voltage +,0~ 100V DC) Black: Power Supply -, Measure Voltage - Package Include: 1x Digital Panel Voltmeter