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Klein Tools Circuit Breaker Finder and Tester Kit

  • Based on 2,663 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Jul 25
Order within 18 hours and 30 minutes
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Style: Finder + Accessory Kit


Features

  • Quickly and accurately locate circuit breakers with transmitter and receiver system
  • Receiver provides visual and audible cues when correct breaker is found for hassle-free locating
  • Transmitter includes a GFCI outlet tester to inspect wiring conditions and test GFCI devices
  • Compatible with 90-120V AC circuits making it suitable for various electrical installations
  • Comes with light socket, alligator clip and 3-prong adapters for wide compatibility

Description

Klein Tools Digital Circuit Breaker Finder with GFCI Outlet Tester ET310 Klein Tools Digital Circuit Breaker Finder with GFCI Outlet Teste Circuit Breaker Finder Accessory Kit, Circuit Breaker Leads, Circuit Breaker Adapters Klein Tools 69411 Circuit Breaker Finder Accessory Kit

Brand: Klein Tools


Power Source: Adapter


Style: Finder + Accessory Kit


Color: Clear


Min. Operating Voltage: 90 Volts (AC)


Power Source: Adapter


Minimum Operating Voltage: 90 Volts (AC)


Measurement Type: Voltmeter


Style Name: Finder + Accessory Kit


Color: Clear


Brand Name: Klein Tools


Model: ET30


Manufacturer: Klein Tools


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jul 25

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.

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  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Excellent tool for electricians, homeowners, and DIY enthusiasts alike.
Style: Finder + Accessory Kit
The **Klein Tools Circuit Breaker Finder and Tester Kit** is an excellent tool for electricians, homeowners, and DIY enthusiasts alike. This kit is designed to help quickly identify circuit breakers associated with a specific outlet, light, or appliance in your electrical system, saving both time and effort when troubleshooting. **Key Features:** - **Easy to Use:** The kit comes with two main components: a transmitter and a receiver. The transmitter is plugged into an outlet or connected to an electrical device, and the receiver is used to scan the breaker panel to locate the correct circuit breaker. - **Accurate and Reliable:** The device uses a tone to help pinpoint the correct breaker, making it simple to match circuits without turning off power to the entire system. The accuracy is generally spot-on for most residential and light commercial applications. - **Visual and Audible Indicators:** The receiver offers both a visual display (LED lights) and an audible tone to indicate the strength of the signal, which makes it easy to track down the right breaker, even in dimly lit environments. - **Range:** It has a good range, making it useful for most typical breaker panels. However, larger or more complex systems might require additional effort, as it may struggle to work through thick walls or other obstructions. **Pros:** - Quick and efficient way to identify breakers. - Ergonomically designed, making it comfortable to hold and use. - Includes both a visual and audible indicator for ease of use. - Compact, portable, and easy to store. - Affordable for the value it provides. **Cons:** - It may not work as well on older breaker panels or systems with high interference. - The receiver's tone could be challenging to hear in very noisy environments. **Final Thoughts:** The Klein Tools Circuit Breaker Finder and Tester Kit is a must-have for anyone who needs to work with electrical systems. It’s accurate, easy to use, and takes a lot of guesswork out of the process of identifying breakers. While it may not be perfect for every situation, for most residential and light commercial setups, it offers excellent value and functionality at an affordable price. Whether you’re a seasoned professional or a weekend DIYer, this tool is sure to make your electrical work safer and more efficient. ... show more
Reviewed in the United States on November 30, 2024 by William Tidwell

  • Good product
Style: Finder + Accessory Kit
Works great makes finding circuits in panel easy
Reviewed in the United States on February 24, 2026 by Michael morency

  • Reliable and Easy to Use!
Style: Finder + Accessory Kit
The Klein Tools Circuit Breaker Finder and Tester Kit is a must-have tool for any DIYer or electrician. The circuit breaker finder works quickly and accurately, helping you locate the right breaker with ease. The tester provides clear readings, ensuring safety and efficiency. It’s user-friendly and the compact design makes it easy to store and carry. A high-quality, reliable kit for both professionals and home users! ⚡🔧✅ ... show more
Reviewed in the United States on March 7, 2025 by BalindaMay

  • Addition to the Test Tool Box
Style: Finder + Accessory Kit
Any do-it-yourself handyperson has occasion to work on an electric circuit that is not labeled within the circuit breaker box. So you have to either play the "trip and check" game or you can use this tool to accurately find the correct circuit. Doing so allows you to remove electricity by "popping" the correct circuit breaker and safely working on a "cold" circuit. This tool is a multi use tool with a GFCI (Ground Fault Circuit Interruptor) tester, a circuit wiring indicator, and a tone indicator for finding the circuit. It comes with a lamp socket circuit tester and a two alligator clip wires connector. A well thought out and useful tool for both the professional or for the do-it-yourself pro that will enhance your test tool box. ... show more
Reviewed in the United States on September 9, 2021 by James Evans

  • If you think you need it, just get it. Worth it
Style: Finder + Accessory Kit
If you need it, it’s the best. Super affordable without compromising quality. I used it to help me trace and rewire my 100 year old house. Paid for itself the first day.
Reviewed in the United States on March 3, 2026 by N. Plumley

  • Great tool for handy homeowners
Style: Finder + Accessory Kit
An incredibly handy tool for a homeowner to have. Works well to determine which breakers go to which outlets/lights/random loose wires in the basement. Unless your breaker box has detailed labels, this is well worth the money. I highly recommend. Amazon also wants me to talk about fit...one size fits me AND you! ... show more
Reviewed in the United States on November 7, 2025 by Lillie

  • Purchased for a One Time Use
Style: Finder + Accessory Kit
Why don't electricians mark circuit breakers? Is it really that hard? I don't know; maybe they leave them unmarked intentionally hoping that you'll call them everytime you want to replace a light switch. I had a lot of light switches to swap out for smart switches. I really didn't want to shut the power off at the main breaker, because it takes forever for my router to resync, and sometimes it won't reconnect to the internet for hours. I ordered this with the intention of getting all my breakers marked. Operation is pretty simple. You plug the transmitter device into a power outlet and take the probe to your circuit breaker box. You run the probe along the breakers and it lets you know which one is controlling the circuit your transmitter is plugged into. There is also an adaptor that lets you screw the transmitter into a light bulb socket. It took me about 2 hours to get all my breakers identified, but it was well worth the time. ... show more
Reviewed in the United States on February 24, 2023 by All Photos All the Time

  • Works
Style: Finder + Accessory Kit
Works awesome, you can find the breaker every time, highly recommend.
Reviewed in the United States on October 4, 2025 by Amazon Customer

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