You can measure DC voltages between 2.5 V-30 V with this mini digital voltmeter. With 7 segments 3-digit lcd display, it gives users a stylish look. 2.5 V-30 V Voltmeter Specifications Sensing Voltage Range: DC2.5V - 30V

Operating Current: <30mA

Display : 0.28 inch led

Dimensions : 31 × 12.0 × 9mm (length x width x height)

Mounting Hole: 23 × 10 mm

Measurement Ratio: ?200mS / times

Margin of error: 1% (+/- 1 word)