Top positive review
Very useful and handy, but troubling lack of certain indicator possibilities
Reviewed in the United States on October 21, 2016
I really do like this device, now that I've figured it out, i know what to expect of it. I took off a star for the lack of clarification on the device about odd readings (readings that are not described)
So, I've seen some reviews about light bleeding from one light to another, giving a somewhat confusing reading. This isn't light just bleeding through plastic, the bulbs in there are indeed lighting up but very faintly. I rewired a bunch of outlets, and in the process learned a few things about this device:
-It's made very nice, feels good
-It Cannot diagnose every problem
-The chart does Not describe every possible indication you may see
-It Does let you know overall if something is wrong.
So, what i mean is that on the device it shows you a list of all possible light configurations. However, two situations are notably missing: all lights on, lights partially on. I've encountered situations where all lights illuminate, but the chart doesn't show this situation. I've also seen variations of lights being on, but only slightly. This is where i think some folks thought it was due to one bright light bleeding into the next light making it seem like it might be on, but it's really an indicator of some other issue. Either way, unless you get two solid orange lights, something isn't right.
You might think that they would mention this in the manual. Nope. Nothing. That's really unacceptable for a device intended for electrical work.
Overall, this device indicates two things reliably: Everything is OK, or something is Wrong. If you get anything but two solid orange lights, something to some extent is wrong. Even if i get solid light indications, i check everything again with a multimeter. You can get decent ones for around $25, and they will tell you exactly what's going on with the outlet. Why not just get a multimeter? That's certainly an option, but my preference is to have the little tester for blanket sweep checks of everything, marking the bad outlets, then going back and checking the bad ones with the multimeter to see exactly what's going on.
Testing an outlet with a multimeter is easy: set it to voltage reading and: red probe to the (hot)small outlet slit, black to the (neutral)big slit. should be 120(ish) volts, then do red to small slit, black to ground (bottom outlet hole), should also be 120v. Then one probe to big slit, the other to ground, should be zero or near zero reading.