2 Wire Red DC2.5-30V LED Panel Digital Display Voltage Meter Voltmeter
Features:** Refresh speed: about 500ms/each time.* Allowable error: 1% (+ /-1).* Power supply:No need power supply.* Current consumption: Less than 20 mA, general 5-15 mA.* Working temperature: -10?C ~ 65 ?C.Package Contents:1 x DC 4.5-30V LED Voltmeter