Features:1. 100% brand new and high quality.2. Electric Socket Tester - Advanced Socket Tester for quick detection of the correct electrical connection of the socket. Designed using the RCD / GFCI test button - the power outlet is properly wired and the RCD / GFCI trip function. It can test the protection system to ensure electrical safety at home.3. Easy to use - Detect the neutral line, connect the wires and ground wire correctly, and indicate which line lacks the bright light mode. Bright LED lights and 3 test lights - The lamp holder icon is labeled on the surface of the socket tester. The tester has a built-in light so it can also be used in the dark. Read test results quickly and easily.4. 7 LED light modes - There are 7 easy-to-read indicators to indicate the status of the socket, easy to judge.5. Wide range of applications - Widely used in electrical maintenance testing in schools, laboratories, factories and other social areas, office outlet testing, power strip testing and wall socket testing. It can save a lot of time to test socket problems.6. Portable design - Small size, light weight and easy to use.Specification:Condition: 100% Brand NewFunctionHT106DHT106BHT106EGFCI test>5mARCD test>30mA>30mAYesLCD displayYesBacklightYesoperating temperature0C-40Coperating Humidity20%-75%RHStorage temperature-10C-50CStorage Humidity20%~80%RHAltitude2000mSocket connection detectionCorrect connectionUnconnected ground wireUnconnectedneutral wireUnconnectedlive wireLive wire and ground wire reverseLive wire and neutral wire reverseLive wire and ground wire wrong, miss ground wireWeight: Approx. 79-90g / 2.8-3.2ozSize: Approx. 66 * 62 * 60mm / 2.6 * 2.4 * 2.4inPackage List:1 * Socket Tester.