The item is designed to test socket if connects positive and negative pole as required and whethter household power protection systems works well or not. It can timely remind the user to make adjustment regarding the breakdown and potential safety hazard. It tests your protection system to ensure the household electrical safety.
Plug: EU Plug
7 LED light patterns.
1 x MUSTOOL MT01ER Socket Tester Leakage Switch Tester
1 x English User Manual
1 x Gift Box