GFCI Outlet Tester

Klein Tools Receptacle Testers are designed to detect the most common wiring problems in standard and GFCI receptacles. A convenient chart on the tester helps determine wiring condition in outlet, based on lights results. Conditions indicated: open ground, reverse polarity, open hot, open neutral, hot/ground reversed.”,”highlights”:[“110/125V AC electrical tester works on standard/GFCI receptacles”,”GFCI Outlet Tester with lights, indicates wiring problems”,”Indicates open ground, reverse polarity and other conditions”