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Tests standard & GFCI sockets/outlets/receptacles for proper wiring (110-125V AC)
Verify proper wiring of GFCI (ground fault circuit interrupter) and standard US and Canadianwall outlets with a simple push of a button
Detect five different wiring faults [open ground, open neutral, open hot, hot/ground reverse, and hot/neutral reverse]
UL and CSA listed for safety