Works on GFI outlets and confirms operation of the ground fault protective device
Conforms to UL Std 1436, Certified to CSA Std C22.2 #160
Built to withstand a 6.6-foot (2m) drop
Operating temp: 32-degrees F to 140-degrees F (0-degrees C to 40-degrees C)
Nominal Voltage: 110/125V AC at 50/60Hz in 3-wire outlet