Klein Tools 80077 Voltage Tester Kit with Electronic AC/DC Voltage Tester, GFCI Outlet Tester and Non-Contact Voltage Tester Pen, 3-Piece, Green

Great little device!

I agree that its definitely only made for residential use but its very simple to use and understand.

Great product. A “must have” for checking circuits. Works as well as the one I borrowed from a friend. Design has been downsized which makes it a bit awkward for me to handle.

So easy to use anybody can use it

Great product ! Use it to check my tenants gfi

Works as advertised. Used this on my walk through on my home. Glad I bought it as this product caught some faulty outlets.

Livraison rapide et item de tres bonne qualité

Great for testing plugs. Recommend for any electrician.

Easy to use and easy to see

This tester is great. I have used it several times to troubleshoot or test outlets and it worked great!