GFCI Tester detects the most common wiring problems in standard and GFCI receptacles

Works on GFCI outlets and confirms operation of the ground fault protective device

Built to withstand a 6.6-foot (2m) drop

Operating temp: 32-Degree to 140-Degree Fahrenheit (0-Degree to 40-Degree Celsius)

Nominal Voltage: 110/125V AC at 50/60Hz in 3-wire outlet