Features: 1. Voltage test range: AC 80~260V; Current test range: 0~100A; Power test range: 0~22kW; Energy test range: 0~9999kWh. 2. It is a compact, lightweight and functional multi-meter, with large-screen LCD display, can display voltage, current, active power and energy at the same time. It does not control or effect the load in any way. 3. Perfect to work with a generator or solar panel setup, also great to monitor accumulated energy usage on devices that cycle on and off(refrigerator, dehumidifier, washing machine, wall a/c unit) and the phantom load(cable modem, router, DVR). 4. Multifunctional: the accumulated energy can be reset by button; Store data when power off; Voltage alarm function (over voltage alarm threshold, backlight and voltage will flash to alarm). 5. The blue backlight can be turned on/off by the front accessible recessed switch located on the right side bezel.