Features: 100% brand new and high quality Specifications: 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 0-10A 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 :472816 mm/1.85*1.10*0.63" Net Weight:19 g Weight:29 g Package Included: 1*Voltmeter Ammeter