Ximico Flat Plug 80-300V AC 110V/220V Digital LCD Voltmeter Gauge Household Factory Switch/large Screen Digital LCD Voltmeter Gauge Switch with Blue backlight Measuring accuracy: 1.5%, 2 digit Measuring range: AC 80-300V Consume power: 1W (about every 1200 hours consume 1 kilowatt-hour) The product can show the voltage of power by connecting to the plug of AC 110V/220V Suitable for office, factory, laboratory, household etc.