Klein Tools Receptacle Testers are designed to detect the most common wiring problems in standard and GFCI receptacles. A convenient chart on the tester helps determine wiring condition in outlet, based on lights results. Conditions indicated: open ground, reverse polarity, open hot, open neutral, hot/ground reversed.

• GFCI Outlet Tester detects the most common wiring problems in standard and GFCI receptacles
• Electrical outlet tester works on GFCI outlets and confirms operation of the ground fault protective device
• Built to withstand a 6.6 ft. (2 m) 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

Klein Tools RT110 Receptacle Tester detects the most common wiring problems in standard receptacles. Conditions indicated: wiring correct, open ground, reverse electrical outlet, open hot, open neutral, hot/ground reversed. Conditions not indicated: quality of ground, multiple hot wires, combinations of defects, reversal of grounded and grounding conductors.

• Outlet tester's light sequence on receptacle tester indicates correct/incorrect wiring
• Receptacle tester conforms to UL std 1436, certified to CSA std C22.2 #160
• Operating temp: 32 degree F to 140 degree F (0 degree C to 40 degree C)
• Built to withstand a 6.6 ft. (2 m) drop
• Nominal voltage: 110-Volt/125-Volt AC at 50 Hz/60 Hz in 3-wire outlet
• Designed to detect the most common wiring problems in standard receptacles