Receptacle tester and circuit analyzer. Detects faulty wiring in any standard 110/125V AC grounded receptacle. Tests 6 circuit conditions; open neutral, open ground, open hot, hot/ground reverse, hot/neutral reverse, and correct. Easy-to-read signal indicators. Plug in and watch the yellow and red lights identify the wiring condition. Yellow. UL (Underwriter's Laboratories) listed. 1 year limited warranty.