This professional socket test can be used in your home, office, kitchen, hotel and other places you like, it can help you check the connection polarity and house wiring of socket, which the LED lights to shows the results. Come on and try it, it will not let you down. Features: Small in size and easy to carry, you can take it to anywhere you want to use it, also can quickly check the socket's wire connection is correct or not. Easy to use: You just need to plug it to check, also woth the one-key detection design, which can save your time. With 6 different LED light patterns indicates different test results,easy to read: correct, open ground, open neutral, live/grd reverse, live/neu reverse, live/grd reverse, missing ground. Wide applications: Can be used for home, bathroom, kitchen to use, also can be sued for electric maintenance testing and safety inspection. The test results display light indicators can intuitively display the test results, even in the suns or dim environment can be used normally, give you a better using experience. Specifications: Material: ABS Plug: EU, UK, USA (optional) Operating voltage: 90~250V/45~65Hz Phase voltage: 90~250V/45~65Hz Accuracy: (2.0%+2) Leakage voltage: 0~99V/45~65Hz RCD test: >30mA (EU/UK Plug) RCD working voltage: 220V20V GFCI working voltage: 110V20V GFCI test: >5mA (US Plug) Working environment: 0 ~ 40, 20% ~75%RH Storage environment: -10 ~ 50, 20% ~80%RH Item size: 68 * 65 * 60mm / 2.7 * 2.6 * 2.4in Item weight: 74g / 2.6ounce Package size: 75 * 70 * 60mm / 3.0 * 2.8 * 2.4in Package weight: 107g / 3.8ounce Packing list: 1 * Electric Socket Tester (Optional)