Buy Now, Pay Later
As low as
$11.66
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Sep 23 – Sep 24
Recently Viewed
Size: 3-Piece Kit
Features
- 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
Description
The Circuit Breaker Finder Kit includes components for various 90-120V AC circuit diagnostics. The receiver locates the correct breaker for outlets or fixtures, and the transmitter can connect to other fixtures using the included accessories. Use the transmitter with the alligator clip adapter for bare wires and the light socket adapter to locate the correct circuits. The transmitter also tests GFCI outlets. Components are stored in a premium carrying case with a foam insert for organization.
Brand: KLEIN TOOLS
Power Source: Battery Powered
Style: 3-Piece Kit
Color: Orange
Item Weight: 0.56 kg
Power Source: Battery Powered
Minimum Operating Voltage: 90 volts
Compatible Devices: Transmitter, Receiver, Electrical devices, Wiring
Style Name: 3-Piece Kit
Color: Orange
Item Weight: 0.56 kg
Item Dimensions: 10.96 x 2.17 x 1.41 inches
Specification Met: Catii 120v
Brand Name: KLEIN TOOLS
Model: ET310KIT
Unit Count: 1 Count
UPC: 092644694929
Number of Items: 1
Warranty Description: Call vendor for warranty
Manufacturer: Klein Tools
Included Components: Circuit Breaker Finder Kit
Part Number: ET310KIT
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sep 23 – Sep 24
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Size: 3-Piece Kit
This 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!
...
show more
Reviewed in the United States on October 14, 2025 by Brother bear
Size: 2-Piece Kit
Whether you just want to check an outlet, or a panel switch, or if you want to map every outlet/light fixture in your home (because you probably won't find it in the breaker panel cover sheet), this tool set is fantastic! It saved me a lot of time without having to flip breaker switches on and off while running all over the house to check which outlet/light/appliance was on which circuit. Anyway, highly recommend.
...
show more
Reviewed in the United States on June 9, 2026 by Elad
Size: 3-Piece Kit
This Klein Tools circuit breaker finder kit is excellent. It's easy to use, it saves a ton of time especially if you're dealing with a big house where the breaker boxes look like pots of spaghetti and have no readable labels, and it's compact in the case, making it a snap to bring pretty much anywhere. Absolutely a worth it item.
...
show more
Reviewed in the United States on June 29, 2026 by bikermom37
Size: 3-Piece Kit
Best tool I've bought in awhile. Having the right tool for the job makes all the difference. This one just saved me an hour because I was about to replace the wrong thing. Turns out, the plug wasn't bad, the cord was so I never even got back to the breaker board.
Reviewed in the United States on August 30, 2026 by Robert
Size: 3-Piece Kit
This is a very nice tool. It works well, per the printed / included instruction manual. (I REALLY like that a printed manual is included and that it fits inside the hard zipper case). The manual is printed in English, Spanish and French. I really like the case, w/ a fitted cavity for all the parts. This tool is (mostly) complete. It doesn't include a #1 Phillips screwdriver, required to open / close the battery door. It is nice that the small battery door screw is captive. It is nice that a (Chinese) 9V battery is included. The illuminated NEMA 5-15 plug-in sender has three indicator lamps, w/ result chart label, for standard wall receptacle testing. It also has a pushbutton to short Neutral to Ground for GFI breaker disable testing. It also automatically transmits the signal to the circuit breaker panel for identification testing. The kit includes three adapters for increased versatility. There is a Edison E26 screw to polarized NEMA 1-15 receptacle adapter for testing standard screw-in light bulb sockets. There is a NEMA 5-15 receptacle to polarized NEMA 1-15 plug, w/ ground screw tab, for testing w/ light bulb adapter. There is a dual insulated alligator clip to NEMA 5-15 receptacle for testing dangling wires. A BIG improvement suggestion is to change the product, from tolerating 90-135 VAC, to instead tolerating 240 VAC The receiver / detector has a NEMA 5-15 receptacle, to store the transmitter between uses. On my device the insertion / removal force was greater than I think is appropriate. The device always exactly located the correct breaker in each of the tests I performed, following the printed instructions. This is recommended.
...
show more
Reviewed in the United States on September 1, 2026 by Paul
Size: 2-Piece Kit
Once you learn how to really use it. Makes finding power to an outlet easy and locating circuit breakers as well.
Reviewed in the United States on August 11, 2026 by Rick
Size: 2-Piece Kit
This kit makes it much easier to identify the correct circuit breaker without repeatedly walking back and forth to the panel. The transmitter and receiver are simple to use, and the breaker finder has been accurate in normal residential and light commercial work. The included outlet tester and accessories make the set even more useful for troubleshooting. It is a practical, well-built kit that saves time and takes the guesswork out of circuit identification.
...
show more
Reviewed in the United States on July 15, 2026 by Daniel
Size: 3-Piece Kit
The reliability and readability from Klein tools durability & the east of use to find mislabeled circuit breakers it’s a Safeway to locate and troubleshoot, unlabeled circuit breakers. The beeping noise helps locate the connectivity with ease of use and not have to worry about messing with the wrong breaker.
...
show more
Reviewed in the United States on August 25, 2026 by richard vera