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

This tester works great. As mentioned in a previous review, it is a little difficult to differentiate between the white and yellow markings on the label, but it isnt too difficult if you are in adequate lighting. The GFCI testing ability also is a nice addition. As a clarification, this is a normal outlet tester that can be used on non-GFCI outlets, but it also has an extra button that adds the ability to test if the GFCI trips when it is supposed to. As one who knows little about electric, this helped me when updated an outside plug with a better weatherproof box. I wanted to make sure the outlet was wired correctly since some other lines in our house arent. I also wanted to test the GFCI tripping. This tool worked great! Hope this was helpful. If you have any questions or need any clarification, feel free to leave a comment.

Everything Okay

First of all, it works. There are however two problems, one worse than the other: 1) The end of the plug was blunt, not tapered. Consequently it did could not be pushed into the new (probably stiffer) outlets I was trying to test. It would push into older outlets that had been loosened up a bit through use, but there was no reason to test older outlets. To get this to work, I had to put an extension cord into the outlet to be tested, then put the meter into the well-used extension cord. Ill probably taper the plug later with a file. 2) The yellow/white coding on the label is difficult to read. As someone mentioned earlier, thats easy to fix with a marker, but is a design flaw that could easily be corrected by the manufacturer. Except for those two problems, it worked fine. I didnt have any problem with bleed-through on the lights, and so the indicator was easy to read.

Works great!

wonderful

I inspect apartments and houses for NJ state housing and this tells me if a unit will fail for wiriing issues

Works as expected Very simple to use and easy to understand

Quick read on an electrical socket if ever in doubt. The LEDs (see product picture) tell the rest of the story. So easy to use!

-- so if youre doing your own house-wiring or a job with GFI breakers in the panel, this will check your work.

Not that it got the most love and care but after a few uses the ground prong snapped off in the outlet. But I fished it out and it fit snugly so I gave it a try and it worked. Then I added a dab of super glue and its been fine. Wish theyd make these audible with a non-annoying sound so you didnt need to walk back and look if testing a circuit (dont tell me a radio as the convenience is its small). That would also help find it when you (well, I) leave it somewhere.