6 in 1 MultimeterOne interface displays 6 kinds of measurement parameters at the same time, including voltage: AC 40-300V, the current: 0-100A, Active Power: 0-30000W, energy: 0-99999kWh, frequency: 45-65Hz, Power Factors: 0-1PF. Best Visual ExperienceColorful HD LCD display, 178 viewing without blind spot, with backlight function, this power meter is clearly visible whatever day or night. Multi-function1.Data reset for multiple measurement needs. Press the reset button for five seconds, the electricity meter will be reset. 2.The value of electric energy will be automatically saved when power off, when the measuring power is reconnected, it will continue to accumulate data. Multiple UseThis din ammeter voltmeter is easy to install and can be used in school, market, home, industry, laboratory and other fields. Attention: The Electricity Meter can only be used to measure 50/60hz city electricity. It will be destroyed when used to measure non-standard square wave and sine wave.