Works great had trouble finding one till I got one at tool barn thanks everyone

Power button

Mine has not broken yet, but if it does, I will make a 3D- printable power button and share it on Thingiverse. Although this would cut Milwaukee revenue on these testers 5x, since the button issue would not make people buy new ones anymore.

Unreliable

I love that this has a flashlight on it, but...The thing buzzes when the power is on with a red light and buzzes when the power is off with a orange light. There is no voltage present and it buzzes and lights. I can't trust it. I'll stick with my Fluke.

Great functionality, poor button design

This tester has been one of my favorite I've ever owned. (Usually bought Fluke) It's small enough to fit in my shirt pocket, and the off/on button is on the END!! Which I absolutely love! However... the button material/design needs some help. I bought my first from Grainger, lasted about 3 months, then the button broke. Grainger gladly sent me a new one for free, but it lasted about 3 months also. Fix the button issue and it's an awesome product!

Unreliable for low voltages

I've had a few of these voltage probes over the years and they've all been pretty good. But I wanted to diagnose problems in my low-voltage outdoor lighting systems. Was glad to find this one would handle a 12V signal BUT UNFORTUNATELY it thinks that even my dog is live (well, I admit he actually is!). But my wheelbarrow also registers live!. On the other hand, it reported the wire going to my lit 12v patio light is dead! Oddly enough, placing it on my 120v rope light only indicates the lo volt range unless I position it precisely against the rope. Guess I'll be taking this unit back - not up to Milwaukee quality I'd say.