DROK Two-wires Digital Voltage Panel Meter Motorcycles Volt Guage 5V/12V 2.50-32V Red LED Voltmeter Battery Tester Measuring Range: DC 2.50-32V (2-wires connection) Operating Current: Minimum,3mA (2.5V), 14mA (32V), Maximum 17mA Display: Three 0.36 " Red LED digital tube, With anti-reverse protection Accuracy: 1% (+ / - 1 digit) (with fine-tuning correction) Automatic decimal point shift: 10V below display x.xx, 10V above display xx.x