Working voltage:4.5-30V DC Note: The maximum input voltage can notexceed 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 :48x29x21 mm Included: 1 X voltmeter 2 X cable