Review on 🔌 Gardner Bender GFI-3501 Ground Fault Receptacle Tester & Circuit Analyzer: Comprehensive 7-LED Visual Tests for GFCI, Standard & Extension Cords | 110-125V AC | Red by Sean Perry

available First, it works. However, there are two problems, one worse than the other: 1) The end of the fork was blunt, not tapered. Therefore it could not be inserted into the new (probably stiffer) exits I was trying to test. It will push into old sockets that have loosened up a bit with use, but there was no reason to test the old sockets. To get this to work, I had to plug an extension cord into an outlet to test, and then plug the meter into a well-used extension cord. I'll probably plug the cork with a file later. 2) The yellow and white coding on the label is difficult to read. As mentioned, this is easy to fix with a marker, but it's a design flaw that's easily fixed by the manufacturer. Other than those two issues, it worked fine. I had no problems with light shining through, so the readings were easy to read.