Gardner Bender GRT-3500 Outlet Receptacle Tester & Circuit Analyzer, Indicates 5 Wiring Errors, Easy Read Chart, Comfort Grip, 120 VAC , Black

This outlet tester works great. Not only does it test regular outlets it also test GFI outlets. We purchased a house and I figured why not tested each outlet. I found one of the outlets had no ground so I took it apart to take a look and found that the original owner of the house added that outlet and used no code wire that does not have a ground. So I had to fix it. Thankfully this tool found it for me.

Excellent product, works perfectly!

The price is great. However, the two flat prongs are not properly aligned when the unit is viewed from the side. Consequently, the unit is very difficult, and in some cases impossible, to insert in to some outlets. The first unit I received was exchanged due to this issue and the second item still had plugs that were not properly aligned, but were better. This is clearly some manufacturing (or design) error and should be addressed. However, for such a low price, its tolerable.

Says every outlet in my house is wired wrong, units probably correct, but there might be other options of wiring this unit needs to accept.

This one was one of the lowest cost outlet testers I could find. It doesnt have any fancy gadgets but it does what it is intended to do. I really dont think I will need another one since it seems sturdy enough. I am not an electrician so I cant comment on specs, but this is great for us DIY people.

This is good for a quick basic check of your outlets. Lights are easy to see and the reference guide to the meanings of the lights is right on the device. It was able to accurately detect an issue I had with some old wiring. Depending on your issue you may still need a multimeter and/or a licensed electrician.

Use it when you want to do a quick troubleshooting and dont want to take your multimeter out of your toolbox. It can tell you if youre wiring is ok or it has some problems which you can later on investigate more with your other tools. At this price its a must for every toolbox.

Easy to read and understand even for a novice with basic wiring knowledge. Works as well as similar testers that cost much more.

Handy tool and it works great!!

Not much to say about a GFCI tester. A little less bulky than some. Solidly built. The neon lights are easy to see from all angles. The test button trips my GFCI. The big win is the price. Some dealers sell the same thing on Amazon for 3x the price. Sometimes without the test button. Every home owner and RV owner should have one in their toolbox. Maybe more than one as they seem to disappear in the night.