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 LED lights results. Conditions indicated: open ground， reverse polarity， open hot， open neutral， hot/ground reversed.
Conforms to UL standard 1436， certified to CSA standard C22.2 #160
Operating temperature: 32°F to 140°F (0°C to 40°C)
Built to endure a 6.6 ft. (2 m) drop
Works on GFI outlets and confirms operation of the ground fault
Nominal voltage: 110-Volt/125-Volt AC at 50/60Hz in 3-wire outlet
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