Good tool. Would buy again.
So far I have used this tool to trace 3 circuits, and I got the right breaker all 3 times. I plan to use it more, as my breaker panel is not labeled well. I really like it, and I can wholeheartedly recommend it.
There are cheaper tools that are supposed to do the same thing, but I didn't want to risk buying a tool for half the price, and then be disappointed. This model has a 'positive' on/off button. I read that an earlier model, the ET300, had a 'hair trigger' on/off button. This ET310 does not have that problem.
I don't know that it makes any difference, but the 3 circuits I traced so far were light switches. I used a 'homemade' adapter using a 3-prong to 2-prong adapter and a piece of small extension cord with the female plug end and alligator clips on the other end.
I can't speak as to how long it will last, as I have only had it a short time.
I just appreciate how easy it made it to find out which breaker was tied to a specific light switch.
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