Klein Tools ET310 AC Circuit Breaker Finder, Electric and Voltage Tester with Integrated GFCI Outlet Tester

I'm not an electrician, but I have to play one in my house. Electricians $$. I also live in a 1940s home, remodeled more than once before and since myself. That means mysterious electric wiring all over. So I needed this badly. Klein is one of the quality devices in line testing, and this one is up to par. It accurately reveals where a outlet leads to which circuit at your electric panel.works well, and accurately almost too sensitive so check nearby circuits several times and settle on the one by flipping that switch and then the outlet then without power. It looks a bit long, but that's because the two parts are meant to when not used. I.e., you don't lose one part.

This thing is a time savor. Not mention it could be a life savor. I love the tool and how it functions. Recommend getting this one of you have a lot of plugs to replace like I did.

I replace my own fans, lights, and outlets. I don't do electrical work often, so when I do I often have to try 2-3 circuit breakers as the labeling is pretty bad. This lets me pinpoint the proper switch the first try. So no more fire alarms beeping or resetting clocks because I turned off the wrong breaker. Also, the piece that plugs into the wall lights up. When you shut off the correct breaker, the light goes off so you know for sure you got the right one. Still use a voltage detector to be 100% certain, but this gets you to where you feel "certain." I put that in quotes because one mistake with electricity means lights out for human beings.If those kinds of annoyances don't bother you, you don't need this. If they do or you just want an easier way to be sure you've got the correct breaker, this is a great tool set.

Works as expected, great you tube video out there

WELL WORTH IT! Wish I had this years ago. Received this morning, read instructions performed task. did visual just to verify. Making all new legible labels for each circuit.

I was pleasntly surpised it worked better than I expected

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The Klein Tools ET310 Circuit Breaker Finder is a game-changer for anyone who works with electrical systems. It’s reliable, easy to use, and takes the guesswork out of identifying circuit breakers.Build Quality:This tool feels solid in hand, as you’d expect from Klein Tools. The rugged design is built to withstand the typical wear and tear of electrical work, and the buttons and connectors are responsive and well-placed.Ease of Use:Using the ET310 couldn’t be simpler. Plug the transmitter into an outlet, and the receiver does the hard work of identifying the corresponding breaker. The receiver is intuitive, with clear lights and sound indicators that make it easy to pinpoint the right circuit.Accuracy:The tool’s accuracy is impressive. It quickly and reliably identifies the correct breaker, saving time and eliminating frustration. I’ve tested it in both residential and commercial settings, and it’s been spot-on every time.Additional Features:The built-in voltage tester is a great bonus. It adds an extra layer of safety, allowing you to confirm whether an outlet or circuit is live before starting work. The integrated GFCI testing function is also handy for verifying ground fault circuits.Portability:The ET310 is compact and lightweight, making it easy to carry around in a tool bag or pocket. The included case keeps it organized and protected when not in use.Value for Money:For the price, the Klein Tools ET310 offers excellent value. It combines multiple essential functions into one device, saving both time and money on electrical projects.Final Thoughts:The Klein Tools ET310 Circuit Breaker Finder is a reliable, well-designed tool that’s perfect for electricians, DIYers, or anyone who regularly works with electrical systems. It’s accurate, easy to use, and built to last—exactly what you need in a tool like this.Highly recommended for its functionality and convenience. It’s one of those tools you’ll wonder how you ever managed without.