Ground fault receptacle tester and circuit analyzer. Tests ground fault receptacles by overloading circuit and tripping GFI. Tests for 7 conditions: Ground fault interruption, open ground, open neutral, open hot, hot/ground reverse, and correct wiring. Easy to use - simply plug tester into any 110/125V AC ground fault receptacle and press black button to overload circuit. Yellow. UL listed. 1 year limited warranty. 1 per card.WARNING:This product can expose you to chemicals including DEHP which is known to the state of California to cause cancer and birth defects or other reproductive harm.For more information go to