SYMFONIA Dual LED 0.28” Red-Blue Display Digital Voltmeter(0-100V)and Ammeter(10A) Voltmeter  (Digital)

Specification:- 1.Working Voltage of Meter Itself: DC 4V - 30V. 2.Working Current of Meter Itself: Less Than or Equal to 20mA. 3.Voltage Measuring Range: DC 0V - 100V. 4.Current Measuring Range: DC 0A - 10A. 5.Voltage Resolution (V): 0.1V. 6.Current Resolution (A): 0.01A. 7.Measure Accuracy: 1 Percent (-1 Percent to 1 Percent). 8.Display: 0.28 Inch Digital Tube(Two Color Blue and Red). 9.Refresh Rate: About 300mS / Times. 10.Operation Temperature: -10 Degree Centigrade to +65 Degree Centigrade. Features:- 1. If the current shows 0, please check the wiring carefully. 2.Inaccurate current display: If the direct or independent power supply shares the same ground with the equipment power supply, just disconnect the thin black wire. 3.All AC rectified electricity must be connected to an electrolytic capacitor above 1000uF for filtering before supplying power to the meter. 4.When discharging: Battery, switching power supply and transformer are power supply, and resistance, electric lamp, motor and electric equipment are loads. 5.When charging: Charger, generator and solar energy are the power supply, while charging pool and battery are the load.