100V 50A Voltmeter Ammeter Blue + Red LED Amp with shunt Working voltage:4.5-30V DC Note: The maximum input voltage can not exceed 30V, otherwise there is the danger of burning Working current:≤20mA Display: 0.28" Two color blue and red Measuring range: DC 0-100V 0-50A Minimum resolution (V): 0.1V Refresh rate: ≥100mS / times Measure accuracy: 1% (± 1 digit) Minimum resolution (A): 0.01A Operating temperature: -15 to 70° c Working pressure: 80 to 106 kPa size :47×28×16 mm/1.85*1.10*0.63" Net Weight:19 g Weight:29 g Package Included: 1*Voltmeter Ammeter