Greenlee GT-10GFI Polarity Cube Receptacle Tester is used to troubleshoot 120 V AC grounded outlets and test GFCI receptacles. This polarity cube receptacle tester has a light sequence that indicates correct/incorrect wiring.
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
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