Power Outlets & Sockets features: Note: This item comes with US plug, please confirm the voltage of your area before purchasing. Rapidly check if the electric wire connection is wrong. Small size, light weight. Reliable and easy to use. Durable in use. Perfect for home, business and circuit construction. Great gadget and saves a lot of time in diagnosing problems with sockets Any user can quickly identify which of the wiring conditions is indicated by the LED lights. Easy, safe, compact. Features Color: Black Material: ABS Size: 6.70 x 6.70 x 4.50cm/ 2.63 x 2.63 x 1.77 inch Measure the voltage: 90~250V/45~60 Hz Voltage measurement: accuracy: (2%+5) Working current: Working temperature: 0~40 Working humidity: 20% ~80% RH Storage temperature: -10~50 The altitude: RCD current: >30 mA RCD operating voltage: 220v 20V US Plug: 110V The tester adopts a LED screen so it can also be used in the dark. Easy and fast to read the test result With easy to read indicators to indicate the state of the socket, easy to judge. Widely used for electric maintenance testing, office sockets testing, power strips testing and wall sockets testing in school, laboratory, factory and other social field. The socket tester saves you lots of time in testing problems with sockets Compact size, light weight and convenient to use. With voltage backlight LCD display for testing voltage.