







⚡ Find it fast, test it right—power up your workflow!
The Klein Tools Circuit Breaker Finder and Tester Kit ET30 is a professional-grade electrical tool designed to quickly and accurately identify circuit breakers using a transmitter and receiver system. It features audible and visual indicators for hassle-free locating, includes a GFCI outlet tester to verify wiring safety, and supports 90-120V AC circuits. The kit comes complete with multiple adapters, making it a versatile essential for electricians and savvy DIYers alike.


| Brand | KLEIN TOOLS |
| Power Source | Adapter |
| Style | Finder + Accessory Kit |
| Color | Clear |
| Min. Operating Voltage | 90 Volts (AC) |
| Measurement Type | Voltmeter |
| Manufacturer | Klein Tools |
| Item Weight | 11.3 ounces |
| Package Dimensions | 10.98 x 9.02 x 2.83 inches |
| Item model number | ET30 |
| Item Package Quantity | 1 |
W**L
Excellent tool for electricians, homeowners, and DIY enthusiasts alike.
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.
F**2
Works really well
Why did you pick this product vs others?:Klein is the only brand of electrical tool I’ll buy. It’s what professionals use and I’ve never had an issue with them before… this one worked great.
B**Y
Reliable and Easy to Use!
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! ⚡🔧✅
A**R
Great invention, not fully accurate
First, this circuit breaker finder has saved me an immense amount of time, and, lets me work with electrical wiring without a second person flipping the breaker as I shout back (or call on my cell phone). However, it didn't always pinpoint the breaker but would sound off as it was moved close to it. So you end up knowing it's one of two or three breakers that switch the targeted line. But that alone has saved me a lot of time. I recommend always doing a test on the line indicated before you begin to splice and attach any hot wires.
B**R
Following the directions made this easy to use. Not so easy if directions are not followed.
At first, I bypassed the directions/instructions. Finding the right breaker was a total fail. I put it in a tool drawer. It sat for a couple of months or more.The other day, I decided to try again. Downloaded the directions on the Internet. Followed them precisely. GUESS WHAT! The circuit breaker worked flawlessly!I do recommend this tool. It's great for finding the right circuit breaker to deenergize before changing a wall outlet or switch with no arcing and sparking. (I hate the arcing and sparking). Just read the directions first. It'll save a lot of frustration.
A**E
Purchased for a One Time Use
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.
D**S
Nice kit
Quality tool that helps to get the job done quickly
A**N
Must have this item. It is worth price.
Expensive but worth price. Old days. I used to plug big radio and turn of one breaker at a time. Now. This save so much time
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