Klein Tools 80016 Circuit Breaker Finder Tool Kit with Accessories, 2-Piece Set, Includes Cat. No. ET310 and Cat. No. 69411

The Klein Tools Circuit Finder is a useful tool that saves time for locating circuits and labelling breakers. The tool is easy to use, and by plugging it into the outlet, scanning down the breakers in the main box, and finding the circuit. It works efficiently on new circuits with AFCI or GFI breakers. However, it needs current to pick up the signal at the breaker box, and it does not work on an ungrounded circuit or when an outlet has no power. Also, the tool cannot locate circuits within junction boxes. The pushbutton to turn on the unit is surrounded by a raised plastic lip. Overall, the tool has received positive reviews from customers, with most finding it efficient and reliable. It also works in large commercial 3 phase panels. However, some customers have had issues in finding circuits, with one customer stating that the tool is not reliable and does not work. It is advisable to buy a case to protect the tool, which is sold separately.