Finding the right breaker in an electrical panel can be frustrating, especially if breakers aren’t labeled clearly. The Klein Tools 80016 Circuit Breaker Finder Kit helps you locate breakers quickly and safely. This kit includes the ET310 digital breaker finder and the 69411 accessory kit, making it useful for both standard outlets and less common connections.
In this review, we’ll cover how it works, who should use it, and why it’s a practical tool for anyone doing electrical work in a home or office.
What’s Included in the Kit
The Klein Tools 80016 includes two main items:
- ET310 Circuit Breaker Finder
- Locates the breaker connected to a 120V standard outlet
- Includes a transmitter and a digital receiver
- Built-in GFCI outlet tester
- 69411 Accessory Kit
- Light socket adapter
- Alligator clip adapter
- Blade plug and ground plug adapter
Carrying case
This set works well for electricians, handymen, and homeowners working on light fixtures, outlets, or other 120V electrical connections.
How It Works
The tool works in two parts. You plug the transmitter into an outlet or use the adapters if you’re working with a light fixture or bare wires. Then, you use the receiver wand to scan each breaker in the panel.
The tool beeps and flashes when it finds the right breaker. This takes the guesswork out of electrical work and saves time.
Key Features
- Works with standard 120V AC outlets
- Digital receiver clearly shows the correct breaker
- Built-in GFCI tester helps check wiring
- Included adapters make it useful for more than just wall outlets
- Compact and organized in a carry case
- No calibration needed
- No batteries required for the transmitter
- Performance in Real Use
Many electricians and homeowners report that the tool finds the correct breaker in under a minute. The receiver doesn’t pick up false readings from nearby breakers, which makes it more reliable than many cheaper models.
With the adapters, you can use the tool to test light bulb sockets, two-prong outlets, and bare wires. This adds to the tool’s value and makes it more flexible.
Who Should Use It
This tool is made for:
- Electricians who need to identify breakers quickly
- Homeowners doing minor electrical repairs
- Maintenance workers and building managers
- DIY users replacing light fixtures or outlets
The tool helps avoid mistakes and saves time when working in buildings where panel labeling is missing or incorrect.
Build Quality
Klein Tools is known for making professional-grade tools. The ET310 receiver and transmitter are well built, with a sturdy casing that feels solid in the hand. The accessories are also made from quality materials and fit securely into outlets and sockets.
The carrying case keeps everything in one place. It’s padded, compact, and easy to store in a toolbox or bag.
Steps to use:
- Plug the transmitter into a working outlet or use the adapter
- Go to the breaker panel
- Scan each breaker with the receiver
- When it finds the right one, the receiver will beep and flash
Most users can learn to use the tool in a few minutes. The instructions are clear and easy to follow.
Compatibility
- Works with 120V AC circuits only
- Does not support 240V systems
- Best for homes and light commercial use
- Can be used with North American-style breaker panels
- This tool is not designed for high-voltage or industrial 3-phase systems.
Pros
- Fast and accurate breaker detection
- GFCI outlet testing adds more value
- Adapters make it suitable for a wide range of jobs
- Easy to use, even for beginners
- Trusted brand with good support
- Comes in a protective case
- Reliable results with minimal false readings
Cons
- Only supports 120V systems, not suitable for 240V or 3-phase power
- Not ideal for large industrial setups
- Some users may prefer a more sensitive receiver for older electrical systems
- May struggle in noisy environments with lots of electrical interference
Customer Reviews
Most users give the product very positive ratings. Common feedback includes:
- “Saved me hours when working on panel labeling.”
- “Very accurate, works every time.”
- “The included adapters are a big help.”
- “Perfect for my home projects and outlet installs.”
Some users noted that the tool didn’t work well in areas with extremely weak signal paths, such as long runs through old wiring. However, this is a common limitation for all circuit tracers, not just this model.
Price and Value
The Klein Tools 80016 kit costs a little more than basic breaker finders, but the accuracy, extra adapters, and GFCI tester make it worth the price.
Compared to buying the ET310 and 69411 separately, this combo saves money and includes a carry case, making it a better deal.
Final Verdict
The Klein Tools 80016 Circuit Breaker Finder Kit is a smart buy for electricians and DIYers who want to work safely and save time. It’s accurate, simple to use, and built to last. The included accessories make it more useful than other basic breaker finders.
If you work with 120V wiring and want a tool that helps you identify the correct breaker fast, this kit is one of the best options available in 2025.