【4 in 1 Multimeter】This digital DC voltmeter ammeter is used to measure voltage, current, energy and active power of electrical appliances. It has passed CCC, FCC and CE certification. 【Measurement Range】Voltage test range: DC 6.5~100V, Current test range: 0~20A, Test range: Active power: 0~2kW, Energy test range: 0~9999kWh. Please DO NOT exceed the rated parameters. 20A is only for short loads, not for continuous use. We recommend upgrading to 50A version if you use continuous power over 15A. 【More Function】Large LCD screen with backlight; Voltage alarm function; Energy reset function; Data storage when power off; Built-in shunt, no external shunt required. 【Wide Application】This DC voltmeter is suitable for indoor use and cannot be used outdoors. It can be used to monitor volts, amps, current and power consumption of battery, solar system, electric bike generator and other fields. The load cannot exceed the rated voltage and current. 【Package】Package: 1*DC multimeter, 1*User manual.