All-sun EM9807 Socket Tester with GFCI
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- Tests standard and GFCI sockets/outlets/receptacles for proper wiring (110-125V AC)
- Verify proper wiring of GFCI (ground fault circuit interrupter) and standard US and Canadian wall 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)
- ETL listed for safety