【4-in-1 Multimeter】 This digital DC voltmeter/ammeter is used to measure the voltage, current, energy, and active power of electrical devices. 【Measurement Range】 Voltage test range: DC 6.5~100V, current test range: 0~20A, active power test range: 0~2kW, energy test range: 0~9999kWh. Please DO NOT exceed the rated parameters. 20A is only for short-term loads, not for continuous operation. We recommend upgrading to the 50A version if you are using it with a continuous output greater than 15A. 【More Functions】 Large LCD screen with backlight; voltage alarm function; power reset function; data storage upon power-off; Built-in shunt, no external shunt required. 【Wide Application】 This DC voltmeter is suitable for indoor use only and cannot be used outdoors. It can be used to monitor the voltage, amperage, power, and energy consumption of batteries, solar systems, electric bike generators, and other applications. The load cannot exceed the rated voltage and current. 【Package】 Package