Klein Tools 80064 AC Circuit Breaker Kit with GFCI Digital Circuit Breaker Finder, Non-Contact Voltage Tester Pen and Zipper Bag, 3-Piece

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.

This has been one of the best tools I have ever bought. We bought an older home and I have been fixing or replacing receptacles and lights. It has worked on every item I had to fix. Highly recommended.

I ordered this tester because it seemed like something that I should have in my "tool arsenal". I tried it as soon as I got it so that I knew that it worked and so that I would know how to use it when I needed it.Circuit Breaker Finder - Worked like a charm! I plugged the "sending unit" into an outlet and then headed for the breaker panel. Using the tester I followed the directions and slowly passed it over all of the breakers once and then repeated it. As you get close to the right breaker - it will start to chirp a bit and when you are on it, you get the tone and the red light and the flashing green - can't miss it! I then flipped that breaker and went back to the outlet I was testing and it was the correct breaker.Sending Unit/Outlet Tester - This is handy in that it shows you if the outlet is wired property (and it was) and I like the GFCI tester function. I tested several of the outlets in my kitchen that should be on a GFCI circuit and when tested, did trip the GFCI outlet that was controlling them.Everything works, it was easy to use, and it makes testing and working on your home/farm wiring really easy. 5 Stars and I would buy it again for sure.

Good to very good. Some times get false readings. For the most part it works well.

I encountered a problem with questionable breaker, so I purchased this tool. I tested it and found a couple of breakers had been mislabeled. I also found out that the breaker I had questions about (unfortuantely) is good while the line to 4 outlets is bad. I purchased another Klein tool that checks if a breaker is functioning okay, and it showed that the one I was concerned with was okay.This tool is worth having if you want to work on an electrical outlet on one side of your home and you need to find the associated breaker on the other side of the home, this is the tool for you. Unfortunately, it doesn't work with light switches.

Great tool, easy to use a real time saver when working alone.

Works wonderfully! Works best if you are comfortable enough taking the cover off the panel, so you can get close to the wires coming in.

I tried this out as soon as I received it along with the recommended accessory kit. It was easy to use the first time and had clear indications as to the location of the correct circuit. No more throwing switches to find the related circuit breaker for any outlet. If you do any electrical problem solving in your home, you need to have this!

Finding the right fuse or circuit breaker is often hard. This tool makes it very easy. Can do it alone and works on fuses and circuit breaker

Es un buen producto que cumple las funciones escritas, el material se ve que es duradero y hasta el momento me a funcionado bien. Gracias

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So, if your electrical panel or sub-panel is organized and very clear to see what's going on in the panel, you can easily find the MCB you are looking for, but in case the panel is too old and a bit messy. Like one of my client's panel, it can be so hard to find the correct MCB, but overall it is a useful product, and thanks to this technology and their team ^^

Curious from the negative reviews, I thought as an electrical engineer, I would get it to work. Well, scanning the breaker board on second pass, it showed the wrong breaker. The microwave which is the only device on that circuit. The tester was plugged in another outlet. So I switched the breaker off, it still showed that breaker. Reset the scanner, learned the board all over, same wrong circuit. Or rather the middle of the breaker board. Then I read in the manual to unplug all devices from the circuit being tested. If I need to do that, this tester saves no time.Fortunately, some reviewers shared how they got it to work. Remove the breaker board cover and scan the wires. Bingo! Found the circuit the gas boiler is on. Without the need to unplug and reset the clocks in each room controller. 4 stars after all.