Southwire 40022S Receptacle Tester; Black

This little tester is great for testing any socket for correct wiring and tests correct wiring for gfi circuits. Well worth the money.

Very useful tools, easy to use and safe

I had to replace all of the GFCI outlets in my house (see my public profile for more details if you are curious, amazing GFCI outlets) and I bought this tool to ensure they would be wired correctly and function. There is a little button on the front which causes a ground fault, to test a GFCI. It worked like a charm and showed me each time if I had made any mistakes. Im glad it did, as I had actually switched around one of my outlets but fixed it later, thanks to this device. In all, its a fantastic product for a fantastic price. I have no complaints whatsoever and think it is the perfect addition to an electricians toolkit!

Works as advertised!

So having just replaced a flaky since we moved in over 20 years ago gfci receptacle in the garage (due to loose wire, but also it turns out due to the top plug-in failed when the plug was plugged all the way in), I wanted to be sure everything is now okey-dokey out there. And it is (checked all the plugs inside the garage and outside). Before that I had also tested all the plugs in the master bathroom (aok) and in the kitchen (aok). Also unfortunately I had tested the guest bathroom plugs. It turns out the only (2-plug) receptacle in there did ground fault when tested, but there is no reset button… so now there are no usable plugs in the guest bathroom. At least the lights and fan in there still work. And in this adjacent bedroom I am in, which shares the same circuit breaker, or so I thought. Hmm… where oh where is the reset button (or breaker (nothing looks amiss in the breaker box))? Edit: Following up, I found out that the guest bathroom and the master bathroom (and all the houses exterior plugs) are all tied to the one gfci plug set in the master bathroom. Also figured out what the two kitchen gfci plug sets were tied to circuit breaker wise, and which other plugs went with which gfci plug (not all of the kitchen plugs it turns out are tied to either of the two gfci plugs). So my mapping of all the plugs and light switches for the entire house is now (even more) complete, helped along by knowing which ones are protected from ground faults and which are not. Great investment. I feel a lot safer.

Got it for home inspection and it worked as expected.

This is a good tester aside from the fact some readings may give false positives. It told me i had hot/ground reverse when i really had a missing neutral.

Good quality. Definitely recommend.

Not sure how accurate this really is. Plugged into an outlet that definitely was ungrounded and it didnt give the proper lighting config for that. Its a good first reference but I wouldnt rely on it solely.

Easy to use