Klein Tools ET310KIT AC Circuit Breaker Finder Kit, Electric Tester, GFCI Tester, Leads, Adapters and Case
4.7 | 892 ratings
Price: 60.19
Last update: 02-19-2026
About this item
- ACCURATE CIRCUIT BREAKER IDENTIFICATION: Quickly locate the correct breaker with precision using the transmitter and receiver of the circuit breaker finder, ensuring efficient electrical troubleshooting
- CLEAR INDICATIONS: The Receiver provides visual and audible cues when the correct breaker is found, ensuring a hassle-free locating process on 90-120V AC circuits
- BUILT-IN GFCI TESTER: The Transmitter includes a GFCI outlet tester, enabling you to inspect wiring conditions and test GFCI devices for added safety
- LIGHT SOCKET AND GROUNDING ADAPTERS: Easily find the correct circuit for a lighting fixture with the light socket adapter, and use the included 3-prong to 2-prong grounding adapter for added convenience
- ALLIGATOR CLIP ADAPTER: Enables testing on bare wires, providing versatile usage options
- PREMIUM CARRY CASE: Dense foam organizes and protects all components in a premium hard carrying case
- CONVENIENT KIT: Includes ET310 transmitter and receiver, light socket adapter, 3-prong to 2-prong adapter, alligator clips adapter, user manual, 9V battery for receiver, and a premium carrying case with foam insert
Product information
Features & Specs
| Power Source | Corded Electric |
|---|---|
| Minimum Operating Voltage | 90 Volts |
Style
| Style Name | Circuit Breaker Finder Kits |
|---|---|
| Color | Orange |
Measurements
| Item Weight | 0.56 Kilograms |
|---|---|
| Item Dimensions | 10.96 x 2.17 x 1.41 inches |
User guide
| Specification Met | Catii 120v |
|---|
Warranty & Support
Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee:You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditionshere.
Manufacturer’s warranty can be requested from customer service.Click hereto make a request to customer service.
Feedback
Klein Tools ET310KIT AC Circuit Breaker Finder Kit, Electric Tester, GFCI Tester, Leads, Adapters and Case
Share:https://www.amazon.com/dp/B0DR9J23P6
Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.
Where did you see a lower price?
Fields with an asterisk*are required
Pleasesign into provide feedback.
Item details
| Brand Name | KLEIN TOOLS |
|---|---|
| Model | ET310KIT |
| UPC | 092644694929 |
| Manufacturer | Klein Tools |
| Included Components | Circuit Breaker Finder Kit |
| Best Sellers Rank |
|
| ASIN | B0DR9J23P6 |
| Customer Reviews | 4.74.7 out of 5 stars(891) 4.7 out of 5 stars |
Top reviews from the United States
- Brother bearGreat tool to add to the tool boxThis is honestly a fantastic tool, and I couldn’t be more impressed with its performance. One of the standout moments for me was when I was trying to locate an unknown breaker in a breaker panel—something that can be a real hassle, especially if you don't have the right tools. This tool made the process so much quicker and easier. What would’ve been a guessing game or a time-consuming trial-and-error process turned into something almost effortless. Not only did it help me find the correct breaker without any headache, but it also made me look like I actually knew what I was doing—always a plus when you're trying to impress friends, family, or clients!
I’ve only scratched the surface in terms of using all the tool’s functions, but even just using it for this one task, it paid for itself. Honestly, after that experience, I knew I’d gotten my money’s worth. The fact that it saved me so much time and frustration made it a solid investment right from the get-go. It’s one of those tools that you don’t realize how much you need until you use it—and then you wonder how you ever managed without it.
While I’d highly recommend this tool to DIYers—especially if you’re someone who enjoys working on electrical projects or home repairs—it’s definitely versatile enough to be useful for professionals as well. Whether you’re just dabbling in home improvement or you’re a seasoned expert, this tool offers enough reliability and functionality to make it a handy addition to anyone’s toolbox.
In short, if you’re on the fence about it, don’t be. Even if you just need it for a single task (like I did), you’ll quickly see that it’s worth the investment. Plus, it’ll definitely make you look a lot more competent than you might feel in the moment—always a nice bonus! - MarshalActually works and works well with bonus attachmentsI have always liked Klein electric tool, because they just work. Had a heck of a time locating a circuit breaker, my house has a huge panel box and 3 sub boxes. At first, I decided to save some money and get a different less expensive breaker finder. To be completely honest, I thought it was Klein because it was the same color, which is on me. That device did not work, keep showing false positives on the same 3 breakers no matter what outlet I had the tester/transponder plugged into. Even when I knew exactly what breaker it was, the other devices failed to recognize it. Tried and tried over and over with the same false positive results.
So, I decided to spend the extra money, which in hindsight was only another $15, and purchase this set. Bonus, this set came with a lot more plus the case for another $5, which is well worth it. I could now not only test outlets to make more they were wired correctly, but also test and trace breakers with outlets, two pongs, light socket and live exposed wires. Very nice.
To test the breaker finder functionality, I plugged the tester/transmitter into a random outlet and confirmed it was wired correctly, which it was. Went downstairs, turned on the breaker finder, "the wand", on my way because I read to do this away from the panel box. Once I got to the box, I ran the wand down the breakers- top to bottom- left to right- first one row and then the other, ignoring the beeping and lights. This apparently learns the breakers, gets an ideal of what's up. Started the process over again and the wand went berserk on the very last breaker- short increased beeping with a red light- over a double 15-amp breaker.
I did not think this was the correct breaker at all because it was a different breaker than the other outlets in the room that I knew of. Said to myself, here we go again, another defective unit that doesn't work, thanks Klein, had high hopes for you, you never let me down before. Held the wand away, reset it and ran the test again, showed the exact same breaker, the very last one in the box, double 15 amp and it even told me it was the top 15-amp switch, not the bottom 15. I reluctantly flipped that breaker off, more out of spite than anything and went upstairs to see what clocks I need to reset and where. MUCH to my surprise, the tester plugged into the outlet was off, no "correct wiring" lights or anything. Humm, must have turned itself off, which didn't make sense since it gets it power from the outlet, so I took it out and plugged it back in and ALAS no power! That was the exact correct breaker! I should have never doubted my buddy Klein! - C. LARSONMystery SolverMoved into a "new" home and needed to figure out the circuit breaker assignments. This set solved the mystery! It even helped me unravel circuit breakers for a bathroom that had outlets assigned to two different breakers. The GFFCI tester is a great extra. Easy to use.
- Chris J. CammackBreaker circuit finderWorst great . Great price. Redid my whole breaker box and labeled.
- terry ballVery accurate. Saves much time. Safe.This device saves a lot of trips up an down the stairs find the right breaker to shut down. This device has NEVER failed
Plus I don't have to work with hot wires. - Michael ValentinoFantastic Well Made Product !!OF COURSE !!! Another GREAT Product from Klein Tools !!
Perfect for my trade, its simple to use, works flawlessly everytime.
Major Tool to keep in my tool bag !! - Stephen E. MorrisGreat circuit tracer.Works great in finding circuits at the breaker box. Be nice if it had an audible indicator I guess, but that's minor.
- S. E.Plug and playI bought this to check the outlets and it arrived right before the electrician was scheduled to show up. It worked great and I could point out the outlets that still needed to be worked on. I also noticed that my electrician was using the same brand tools! Our house was built before electricity existed so it gives me peace of mind that the wiring is correct.