Typically $10.97 — price, ratings, and availability change often, so check the current listing before you buy.
Plug-in receptacle tester that instantly diagnoses the five most common wiring faults and tests GFCI outlets with one button.
Quick Take
About ten bucks to know if an outlet is wired wrong before you plug anything expensive into it. The light code tells you exactly what's wrong.
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Older houses, new-home walkthroughs, and checking outlets before plugging in electronics.
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Best for: Anyone with a tank water heater more than a couple of years old
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Best for: Stubborn kitchen, tub and floor drain clogs
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Fill valve and flush valve in one box — the fix for a toilet that runs, hisses or won't refill.
Best for: A toilet that runs, hisses or refills forever
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