【Multiple Detections】Outlet Tester Can Detect Grounding Faults, Open Ground, Open Neutral Wire, Open Live Wire, Reversed Live/Ground Wire Connection, Reversed Live/Neutral Wire Connection, And Incorrect Wiring. 【Easy To Use】Simply Insert Outlet Tester Into The Socket And Observe The Indicator Light. 【Convenient And Fast】The Led Indicator Light Quickly Determines Whether The Wiring Of Outlet Tester Is Correct. 【Durable And Reliable】Outlet Tester Features A Compact Design And A Durable Abs Shell, Ensuring Safe Use. 【Applicable Voltage】125v Ac, 50/60Hz, Three-Wire Outlet Tester.