【Multiple Detection】Outlet Tester for ground fault interruption, open ground, open neutral, open hot, hot/ground reverse, hot/neutral reverse and correct wiring 【Easy to Use】: Simply plug the 3-wire receptacle tester into the outlet and note the light pattern. 【Convenient & Quick】LED indicators allow quick determination of the correct connection of standard 3-wire sockets 【Durable & Safe】Outlet Tester with compact design and durable ABS housing, Safe to use 【Nomil Voltage】：125V AC, 50/60Hz, 3-wire outlet Receptacle Tester for Plug Security Test