AFCI /GFCI Outlet TesterGFCI Tester detects the most common wiring faults in standard, AFCI, and GFCI electrical outlets Test AFCI devices by simulating arc fault conditions Test GFCI devices by simulating ground fault conditions Capable of detecting a dual open wiring fault with simultaneous open neutral and open ground wires (patent pending technology) Tester delivers clear visual indication of the wiring condition at the electrical outlet Designed to test North American