DC3.3-30V Green 3-Digital 0.36" LED Car Motor Voltage Panel Meter Mini Voltmeter Working Current: 20mA.Measure Voltage Range: DC 3.3-30V Two-wire access Measurement Accuracy:1% (+ / - 1 digit).Display: Three digit 0.36" LED Display Color: Green.Refresh Rate:about 500mS / times.Power Supply: DC 3.3-30V Operating Temperature: -10C to +65C.Size:23mmx15mmx10mm Package Include: 1 x Car Digital DC 3.3-30V LED Voltmeter