Klein Tools ET310 AC Circuit Breaker Finder, Electric Tester With Integrated GFCI Outlet Tester

Bought this as a Christmas present. Went to use it last week -- after using it, we thought we had a major electrical problem with the house so we called an electrician. The electrician told us the problem -- the tester is DEFECTIVE. Disappointed as Klein is a reputable company. Not sure if its because of Amazon -- dissatisfied.

This is my second purchase. This is the tool to buy when working on an old houses eletrical system safely.

works as described . I only need it once but good to have in the tool box for future use .

This is a good tool to find a breaker that needs to located, in a panel box, simple to use, plug the transmitter in the outlet, ( if you purchased the accessory bundle, it will include a lamp bulb to outlet adapter, and a set of alligator clips to outlet, for raw wire connections ) the transmitter also functions as an indicator when the circuit is energized ( tally lights illuminate ), and it will indicate how the outlet is wired, ( reversed polarity, missing ground,etc. ), then you turn on the detector, and go to the fuse/breaker panel box/board, then you start at the top of the row of breakers and slowly drag the device down, on each bank of breakers, the unit will buzz/light-up, somewhat randomly, you do this ,so the device can learn the panel-board, then do a second sweep of the breakers, and it will locate the circuit that the transmitter is connector to, works pretty well, like 85-90 percent of the time, if you have sub-panels, it will only show the breaker for the sub-panel, you will have to repeat the sweep method, on the sub-panel it self, and you will have to turn off the sweep device and re start the process on the sub panel to find the breaker/circuit, try to use fresh batteries, year old batteries will give so,so results, I date stamp my batteries when inserting, so there no question as to how old they are

I loved it, I needed it to track down breakers because I needed to exchange some of my outlets in my home.

Bueno

Tried it on three separate circuits and it was wrong on the circuit each time

Accurate most of he time

Have gotten to depend on this to check plugs - got new storage shed wired - went behind electrician when he finished just to check - gave peace of mind - also used in the house to check grounding on some sockets - works great !

Works like a charm! Moved into a house and all the electric panel had general lighting down 11 CB. No idea what CB went to what. But now I have an idea. Yay