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

I really like this tester. I have many outlets mounted upside down and this tester allows you to read the results on BOTH sides unlike some others on the market. Recommend!

I am a homeowner, and a casual user of the device. Between moving and remodeling I have seen inspectors use these devices. I figured - why wait for them to find something - get one of my own. The price was right.

This is an inexpensive ground tester which seem to work great and confirmed that my ground was installed correctly.

Some receptacles are installed upside down which make the unit hard to use & read.

Excelente and a good price

Always wanted one. Works great nice to have around the house

This is a good idea, but the materials are probably poorly assembled or improperly assembled. I tested this for reverse polarity in both positions. I connected the tester to a NEMA 5-15 to NEMA 1-15 (non polarized) adapter so I could test the reversal of polarity in a safe manner. But to my dismay the red indicator never turned on once, in reversed and correct position. The red pilot light is totally dead. The indicator however, does properly identify open and correct ground. For what thats worth. I was suspicious of this tester as I heard a small jingle in the tester, but I paid no mind at first. I am glad I tested it to make sure it was in working order. I think Ill just pay a tiny bit extra for a non contact voltage tester. But not from GB. Update: received a replacement that also was not able to detect reversed polarity. Do not buy this product, it provides a false sense of security. But a non-contact voltage tester instead.

When I first looked at this tester in hand I did not understand why the label legend only showed red and white indications. I had to use an infrared light to see which indicators on the label were supposed to be yellow. I have normal color vision. The yellow color is printed too lightly to discriminate it from the white indicator legends. It looks like several other brands of tester sold here at Amazon have the same kind of label. The yellow color shows up fine in the product photo but not so well in real life. Putting that aside, the tester seems well made. The GFCI test function works fine. The prongs are a bit thicker than they should be and the tester does not want to plug in without exerting a bit more pressure than for most plugs. The prongs, even the ground prong, are solid metal. I will find a yellow marker or something similar to try and touch up these faded little yellow symbols. It is disappointing that an otherwise fine product is marred by this sort of manufacturer carelessness. If this problem is not an issue for you, I recommend this tester. Its cheaper than most and built very solidly. I want to be able to understand at a glance what the lights are telling me. Ill be returning this and getting the more expensive (but legible) Amprobe tester instead.

This is a great tool for the Convenient Store refrigeration guy, or anyone else just looking to confirm proper ground/power situation. A quick diagnosis and simple to understand. I have a few of these and they all still perform well. Gave them to my Service Techs as gifts, and saves time. Especially up here in the Northeast, where lots of folks do their own wiring the Yankee way... nuff said???

Does not have a gfi button on the black version. Otherwise works well. Good buy.