DROK 200123 Digital Multimeter AC 80-260V 100A Voltage Amperage Power Energy Meter AC Volt Amp Tester Voltmeter Ammeter Watt Meter 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 Voltage test range: AC 80~260v; current test range: 0~100a; power test range: 0~22kw; energy test range: 0~9999kwh Display has great visibility, very bright and Clear; the Blue backlight can be turned on/off by the front accessible recessed switch located on the Right side bezel Multifunctional: the accumulated energy can be reset by button; store data when power off; power alarm threshold preset function; overload alarm function (over power alarm threshold, backlight and power will Flash to alarm) Perfect to work with a generator or solar panel setup, also great to monitor accumulated energy usage on devices that cycle on and refrigerator, dehumidifier, washing machine, wall a/C unit) and the phantom load(cable Modem, router, dvr)