Fangrui Product Details This Is A High-precision Ac Digital Display Meter That Can Accurately Measure And Display The Voltage, Current, Power, Energy Consumption, Frequency, Power Factor, Etc. Of Ac Power Grid Electrical Equipment In Real Time, Helping Users To Understand The Operating Status Of The Equipment In A Timely Manner. Lcd Full-display Lcd Screen, Large Screen Full Display, Clear And Identifiable. Overload Alarm Function: The Power Alarm Threshold Can Be Set By Yourself. Backlight Control: Can Turn The Backlight On Or Off By Short Pressing The Button, And The Backlight Status Will Be Automatically Saved When The Power Is Off. Reinforced Nylon Material, Full Of Elasticity, Three-point Buckle Design, Firm And Durable Installation. Application Scenarios: In The Face Of Different Needs, It Can Be Applied To Home Appliances, Distribution Cabinets, Electrical Appliance Maintenance, Assembly Line Testing, Photovoltaic Systems, Etc. Parameters: Voltage Test Range: 80~260v Current Test Range: 0~100a Power Test Range 0~22000w