4 in 1 MultimeterThis digital DC ammeter voltmeter is used to measure voltage, current, energy and active power of electrical appliances. Measurement range Test range Of voltage : DC 6.5~100V, current test range: 0~20A, active power test range: 0~2kW, energy test range: 0~9999kWh. Please DO NOT exceed rated parameters. 20A is only for short load, not for continuous operation. We recommend you upgrade to 50A version if you use with continuous output over 15A. More Function Large LCD display with backlight; voltage alarm function; energy reset function; Data storage when power off; Built-in shunt, no external shunt needed. Wide ApplicationThis DC voltmeter is suitable for indoor use and cannot be used outdoors. It can be used to monitor volt, ampere, power and power consumption of battery, solar system, electric bike generator and other fields. The load cannot exceed the rated voltage and current. PackagePackage: 1 * DC multimeter, 1 * user manual. Pay attention: Please connect according to the wiring diagram we provide.