ITEM NAME:DC 100V 10A Voltmeter Ammeter Blue + Red LED Amp Dual Digital Volt Meter Ga C2S8 DC 100V 10A Voltmeter Ammeter Blue + Red LED Amp Dual Digital Volt Meter Ga C2S8 Working voltage:4.5-30V DC Working current:≠¤20mA Display: 0.28" Two color blue and red Measuring range: DC 0-100V 0-10A Minimum resolution (V): 0.1V Product Description Note: The maximum input voltage can not exceed 30V, otherwise there is the danger of burning 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 :48×29×21 mm Package includes: 1 x 100V 10A DC Digital Voltmeter Ammeter.Display: 0.28" Two color blue and red. size :48×29×21 mm. Minimum resolution (A): 0.01A.