The outlet tester is an essential tool for ensuring electrical safety. With its backlit LED screen and one-button GFCI testing, it allows you to quickly identify 7 common wiring faults, helping you efficiently troubleshoot electrical issues and maintain a safe electrical environment. | Vevor | | Outlet Tester, Electrical GFCI Trip Tester, LCD Display Receptacle Detector for 7 Common Wiring Faults, 3 Prong Socket | Black | Best Buy