0.36 3.2-30V Small Voltmeter Digital Battery Tester DC Volt Meter panel Voltage Electric Measure 2-Wires

product description Display panel: 22.5 mm x 14 mm Total length: 31 mm (including mounting ears) Thickness: 12 mm Mounting hole center distance: 27 mm Mounting hole diameter: 2.5 mm Measurement voltage: DC 3.2-30V (2-wire connection, red: positive; black: negative) Supply voltage: DC 3.2-30V (collinear) Measurement accuracy: 0.5% (+/- 1 bit) Display: three 0.36 "digital LED tube Display color: green Refresh rate: about 500mS / times Operating temperature: -10 ° C ~ 65 ° C Reverse polarity protection For car / battery car / motorcycle or other voltage measurement Package includes: 1x digital panel voltmeter LED product information