Mini Digital Voltmeter Ammeter DC 100V 10A Panel Amp Volt Current Meter Tester 0.28" Blue Red Dual LED Display Specifications: Working voltage of Meter itself:DC 4 - 30V(The maximum input voltage can not exceed 30V. Otherwise the meter will be burned) Working current of Meter itself:≤20mA Voltage Measuring range: DC 0 - 100V Current Measuring range: DC 0 - 10A Voltage resolution (V): 0.1V Current resolution (A): 0.01A Measure accuracy: 1% ( 1 digit) Display: 0.28" digital tube, Two color blue and red Refresh rate: about 300mS / times Dimensions:48mm*29mm*26mm Operation Temp: -10-+65 Wiring: Package Include: 1x DC 100V 10A Voltmeter & Ammeter