Identifies faulty park power and provides surge protection_Convenient Easy-T-Pull plug handles_Increased receptacle brass thickness reduces heat_Easy to read LED fault chart provides simple power analysis_UL/CUL Listed_Fully enclosed receptacle cover_Includes anti-theft lock ring on cord_Missing leg 1/leg 2 voltage_Test for and indicates: Open neutral, Open Ground, Reverse Polarity, Open circuit/No power, surge protection status, overheating plug/receptacle