1100% brand new and high quality. 2Electric Socket TesterAdvanced Socket Tester for quick detection of the correct electrical connection of the socket. Designed using the RCD / GFCI test buttonthe power outlet is properly wired and the RCD / GFCI trip function. It can test the prote 3Easy 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 47 LED light modes - There are 7 easy-to-read indicators to indicate the status of the socket, easy to judge 5Wide 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
