---
product_id: 5243939
title: "Extech CB10 AC Circuit Breaker Finder and Receptacle Tester - Professional Grade GFCI Outlet Tester for Home & Industrial Use - Pinpoint Breakers and Fuses - Includes 9V Battery and LED Indicators"
brand: "extech"
price: "€ 106.37"
currency: EUR
in_stock: true
reviews_count: 8
category: "Extech"
url: https://www.desertcart.fr/products/5243939-extech-cb10-ac-circuit-breaker-finder-and-receptacle-tester-professional
store_origin: FR
region: France
---

# Pinpoints breakers w/o power off Two-pass calibration for 100% accuracy Ready out-of-box with 9V battery included Extech CB10 AC Circuit Breaker Finder and Receptacle Tester - Professional Grade GFCI Outlet Tester for Home & Industrial Use - Pinpoint Breakers and Fuses - Includes 9V Battery and LED Indicators

**Brand:** extech
**Price:** € 106.37
**Availability:** ✅ In Stock

## Summary

> ⚡ Master your electrical domain with precision and confidence!

## Quick Answers

- **What is this?** Extech CB10 AC Circuit Breaker Finder and Receptacle Tester - Professional Grade GFCI Outlet Tester for Home & Industrial Use - Pinpoint Breakers and Fuses - Includes 9V Battery and LED Indicators by extech
- **How much does it cost?** € 106.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/5243939-extech-cb10-ac-circuit-breaker-finder-and-receptacle-tester-professional)

## Best For

- extech enthusiasts

## Why This Product

- Trusted extech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Ready-to-Go:** Ergonomic design with snap-together transmitter/receiver and included 9V battery for immediate use.
- • **Dual-Scan Calibration:** Eliminate false signals with a patented two-pass sensitivity calibration for pinpoint accuracy.
- • **Precision Circuit Mapping:** Locate breakers & fuses instantly without flipping switches, saving you time and hassle.
- • **Manual Sensitivity Control:** Fine-tune detection to cut through electrical noise and avoid ghost signals in crowded panels.
- • **Integrated GFCI Safety Testing:** Detect wiring faults and test GFCI outlets with a dedicated trip button and multi-LED indicators.

## Overview

The Extech CB10 is a professional-grade AC circuit breaker finder and receptacle tester designed for both home and industrial use. Featuring two-pass calibration technology, it ensures 100% accurate breaker identification without shutting off power. Its integrated GFCI tester detects common wiring faults and tests safety outlets with dedicated LED indicators and a trip button. The device includes a manual sensitivity dial to eliminate false signals, comes with a 9V battery, and boasts a compact, ergonomic design for easy storage and immediate deployment.

## Description

Product Description The Extech CB10 is the ultimate time-saver for homeowners and electricians alike. This 2-in-1 diagnostic tool eliminates the frustration of flipping every switch in your breaker box just to find one specific circuit. Simply plug the transmitter into your target outlet and run the receiver over the panel. The audible and visual alerts, combined with a manual adjustable sensitivity dial, ensure you find the right breaker or fuse on the first try, even in high-density panels where automatic testers often fail. Beyond locating breakers, the CB10 acts as a comprehensive safety auditor for your home. The integrated receptacle tester features a dedicated GFCI test button and a multi-LED display that identifies correctly wired outlets and five different fault conditions: open ground, open neutral, open hot, hot/ground reverse, and hot/neutral reverse. Whether you are troubleshooting a dead outlet, installing new light fixtures, or performing a professional home inspection, the CB10 provides the reliable accuracy you need to work with confidence. The compact, ergonomic design allows the transmitter and receiver to snap together for easy storage, and the package comes complete with a 9V battery, so you can start mapping your electrical system immediately. From the Manufacturer Locates the correct circuit breaker or fuse without turning off the power. Simply plug the transmitter into an outlet and trace for the correct breaker at the electrical box. Transmitter also verifies wiring and tests GFCI operation. Bright red and green LEDs indicate if receptacle is correctly wired or will indicate which of the 5 fault conditions exists. Convenient storage position for transmitter/receptacle tester. Complete with Receiver, GFCI Transmitter, and 9V battery.

Review: Works through walls too - I just bought this to use in my older house and it has worked great for finding the breakers and even wires in the wall! I find for the walls it can be a little hard to trace as I feel like the wires have to be within 1-1.5" deep with the sensitivity maxed out and you can loose the signal being as little as 1/4" off from the trail, but it totally works and let me trace a few wonky paths so I could figure out exactly where the wire was moving in my walls and even to a buried junction box. I also really like the manual adjustment since it lets me hone in the breaker real quick and I don't have to scan the breaker like you see with the auto-adjusting ones. I just go to the breaker on about "half" sensitivity, move fast, and when I hear the beep I just drop it to lowest immediately and find it every time. Also due to the manual aspect of it, it let me figure out that a circuit was being served by 2 breakers and tracing which wire went where within the 14/3 wire sleeve itself since I could turn the sensitivity down so low. The socket tester works well too from the few tries. Only real issue I noticed is if you have any of the circuit based dimmers that basically everyone uses now since LED lights need them for dimming, it'll also send a signal in the line that this can pick up. It's real obvious though as it beeps much faster and sounds funny compared to how the device normally works, so either just ignore it and follow the normal beeps or turn off the light, surge protector, etc. Great device and wish I had one sooner to figure out all this weird wiring and no constant breaker switching either!
Review: Works well and reliable - Very effective tool, I use it on almost every repair call. It made me look like a pro when I labeled all the sub panels for a commercial warehousing customer of mine who berths hundreds of food trucks boats and RV's. When they need to know where a breaker is in one of their 9 panels they can find it because they are all labeled now at the receptacles. It works for two and three leg circuits without neutral legs better than I thought it would. I used alligator clip jumper wires and pins to connect the plug to the various twist lock and range receptacles that the food trucks plug into for the night. It is a little hazardous to have open hot wires using alligator clips, but it works safely and well well with a little caution and a vigilant helper. I am very happy. I have also used it to locate GFI feeds and test GFCI receptacles. It is a good tool and a great price. It is not a hard core unit in the long run, but it is not crummy cheap either. I am a professional repair contractor and although I am not destructively hard, am very hard on my gear in normal use, electrical work is a rough discipline. I drop things a lot, and I use it up, burn it out, and play it as productive as possible. I have no problem with the fact that a saws-all lasts me about a year during rough in work. The tool makes its money several times over. The plug-in on the breaker locator broke when I was testing a GFCI. The ground prong came out of the plastic body. The prongs are good thick stainless steel but it needs a larger chamfer ring to hold it into the plastic, at least the ground prong anyways. I absent minded threw both the plug and receiver away immediately on the job site with some other debris and wire clippings. I looked closely at the body of the plug and hastily decided not to try to open it and fix it. I figured I would just buy another one. Now I wish I had saved it and looked closer later. I have a entry level quality toner kit also and love it. I have dropped it twice and opened it and fixed the antenna cartridge and the speaker twice. I can not see the point in spending over 100 bucks on instruments that are gonna get beat up, or stolen anyways. This is an excellent tool whether you are a home-owner or a professional. The seller gets it out quick and with good packaging. If I am more careful with the plug I am sure it will not break again.

## Features

- PRECISION BREAKER IDENTIFICATION: Quickly and accurately locate the correct circuit breaker or fuse without turning off power. Ideal for labeling residential or industrial electrical panels.
- TWO-PASS CALIBRATION TECHNOLOGY: To ensure 100% accuracy, scan all breakers once to calibrate sensitivity, then scan a second time to pinpoint the specific circuit. (Prevents "incorrect" or "multiple" breaker signals).
- INTEGRATED GFCI TESTER: The transmitter acts as a professional-grade outlet tester. It detects common wiring faults (Open Ground, Open Neutral, Reverse Polarity) and includes a dedicated GFCI trip button to test safety outlets.
- SENSITIVITY ADJUSTMENT: Features a variable sensitivity dial on the receiver, allowing you to fine-tune the signal to eliminate "ghost" chirps caused by electrical noise in crowded panels.
- READY OUT OF THE BOX: Includes a 9V battery and a rugged receiver/transmitter set. Pro-Tip: If the unit does not beep, ensure the 9V battery is snapped firmly into the terminal clips and the battery cover is locked.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0014FNWJG |
| Best Sellers Rank | #224,461 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #303 in Circuit Testers |
| Brand | Extech |
| Brand Name | Extech |
| Color | Green, Red |
| Customer Reviews | 4.3 out of 5 stars 2,837 Reviews |
| Global Trade Identification Number | 00793950400104 |
| Included Components | CB10 |
| Item Dimensions | 10.1 x 5.4 x 1.5 inches |
| Item Height | 1.5 inches |
| Item Weight | 0.02 Kilograms |
| Item dimensions L x W x H | 10.1 x 5.4 x 1.5 inches |
| Manufacturer | Extech |
| Measurement Type | Voltmeter (for AC voltage) |
| Minimum Operating Voltage | 110 Volts (AC) |
| Model | 1218G94EA |
| Power Source | Battery Powered |
| Style | CB10 |
| Style Name | CB10 |
| UPC | 785533703542 793950400104 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 Year |

## Product Details

- **Brand:** Extech
- **Color:** Green, Red
- **Item Weight:** 0.02 Kilograms
- **Power Source:** Battery Powered
- **Style:** CB10

## Images

![Extech CB10 AC Circuit Breaker Finder and Receptacle Tester - Professional Grade GFCI Outlet Tester for Home & Industrial Use - Pinpoint Breakers and Fuses - Includes 9V Battery and LED Indicators - Image 1](https://m.media-amazon.com/images/I/71Y48qBGL1L.jpg)
![Extech CB10 AC Circuit Breaker Finder and Receptacle Tester - Professional Grade GFCI Outlet Tester for Home & Industrial Use - Pinpoint Breakers and Fuses - Includes 9V Battery and LED Indicators - Image 2](https://m.media-amazon.com/images/I/71fCeosoj3L.jpg)
![Extech CB10 AC Circuit Breaker Finder and Receptacle Tester - Professional Grade GFCI Outlet Tester for Home & Industrial Use - Pinpoint Breakers and Fuses - Includes 9V Battery and LED Indicators - Image 3](https://m.media-amazon.com/images/I/71qV33-DWoL.jpg)
![Extech CB10 AC Circuit Breaker Finder and Receptacle Tester - Professional Grade GFCI Outlet Tester for Home & Industrial Use - Pinpoint Breakers and Fuses - Includes 9V Battery and LED Indicators - Image 4](https://m.media-amazon.com/images/I/71v-lLwrU1L.jpg)
![Extech CB10 AC Circuit Breaker Finder and Receptacle Tester - Professional Grade GFCI Outlet Tester for Home & Industrial Use - Pinpoint Breakers and Fuses - Includes 9V Battery and LED Indicators - Image 5](https://m.media-amazon.com/images/I/71vSvjsm6AL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Can you use this to trace the outlet to its circuit breaker if the circuit breaker is damaged or off?**
A: Unfortunately it can't. The CB 10 used to locate breakers from a energized outlet. The device needed to find a open, or deenergized circuit will have a tone generator built in, these are more commonly called wire tracers.They are a little more expensive but well worth the cost.

**Q: I have outlets wired in series: some NM. some metal-shielded.  Can I detect signal in accessible wires "halfway" to the breaker to confirm route??**
A: You should be able to trace wiring that is not in a shielded metal conduit.  I submit however, that your outlets are not wired in series, they are in parallel and perhaps daisy chained, but they will not be in series, nothing will work if they are.  Remember the old Christmas tree lights that if one was bad or missing they all went out?  That was series wiring.

**Q: Can this trace a wire routing through the wall.**
A: In answer to the question, the CB10 can not be used to trace a wire behind walls. There are instruments out there that are designed specifically to trace the location of hidden wires but are extremely expensive.

**Q: can it be used to test another outlet to see if it's using the same line/breaker?**
A: Thank you for your most recent email inquiry.

Model CB10 can be used to identify what breaker an outlet is on. 

Please contact us if you a have any further questions. Thanks.

Best Regards,
Westtown Products

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works through walls too
*by D***D on April 5, 2024*

I just bought this to use in my older house and it has worked great for finding the breakers and even wires in the wall! I find for the walls it can be a little hard to trace as I feel like the wires have to be within 1-1.5" deep with the sensitivity maxed out and you can loose the signal being as little as 1/4" off from the trail, but it totally works and let me trace a few wonky paths so I could figure out exactly where the wire was moving in my walls and even to a buried junction box. I also really like the manual adjustment since it lets me hone in the breaker real quick and I don't have to scan the breaker like you see with the auto-adjusting ones. I just go to the breaker on about "half" sensitivity, move fast, and when I hear the beep I just drop it to lowest immediately and find it every time. Also due to the manual aspect of it, it let me figure out that a circuit was being served by 2 breakers and tracing which wire went where within the 14/3 wire sleeve itself since I could turn the sensitivity down so low. The socket tester works well too from the few tries. Only real issue I noticed is if you have any of the circuit based dimmers that basically everyone uses now since LED lights need them for dimming, it'll also send a signal in the line that this can pick up. It's real obvious though as it beeps much faster and sounds funny compared to how the device normally works, so either just ignore it and follow the normal beeps or turn off the light, surge protector, etc. Great device and wish I had one sooner to figure out all this weird wiring and no constant breaker switching either!

### ⭐⭐⭐⭐⭐ Works well and reliable
*by S***N on August 7, 2015*

Very effective tool, I use it on almost every repair call. It made me look like a pro when I labeled all the sub panels for a commercial warehousing customer of mine who berths hundreds of food trucks boats and RV's. When they need to know where a breaker is in one of their 9 panels they can find it because they are all labeled now at the receptacles. It works for two and three leg circuits without neutral legs better than I thought it would. I used alligator clip jumper wires and pins to connect the plug to the various twist lock and range receptacles that the food trucks plug into for the night. It is a little hazardous to have open hot wires using alligator clips, but it works safely and well well with a little caution and a vigilant helper. I am very happy. I have also used it to locate GFI feeds and test GFCI receptacles. It is a good tool and a great price. It is not a hard core unit in the long run, but it is not crummy cheap either. I am a professional repair contractor and although I am not destructively hard, am very hard on my gear in normal use, electrical work is a rough discipline. I drop things a lot, and I use it up, burn it out, and play it as productive as possible. I have no problem with the fact that a saws-all lasts me about a year during rough in work. The tool makes its money several times over. The plug-in on the breaker locator broke when I was testing a GFCI. The ground prong came out of the plastic body. The prongs are good thick stainless steel but it needs a larger chamfer ring to hold it into the plastic, at least the ground prong anyways. I absent minded threw both the plug and receiver away immediately on the job site with some other debris and wire clippings. I looked closely at the body of the plug and hastily decided not to try to open it and fix it. I figured I would just buy another one. Now I wish I had saved it and looked closer later. I have a entry level quality toner kit also and love it. I have dropped it twice and opened it and fixed the antenna cartridge and the speaker twice. I can not see the point in spending over 100 bucks on instruments that are gonna get beat up, or stolen anyways. This is an excellent tool whether you are a home-owner or a professional. The seller gets it out quick and with good packaging. If I am more careful with the plug I am sure it will not break again.

### ⭐⭐⭐⭐ Works very well, but you have to fiddle with it a little to get it dialed in.
*by L***G on April 6, 2023*

I had no idea this kind of product existed until I was having trouble tracing circuits in my house. The house is midcentury, so not crazy old, but it has had some interesting wiring work done over the years. During those years nobody has apparently taken the time to accurately label the breaker boxes downstairs, so you can never tell what circuit anything is on. Normally this is frustrating, but not the end of the world, but recently was a much bigger problem. I got a MIG welder that I can use for hobby stuff, but it has to be on a 20AMP circuit instead of 15AMP. Normally this wouldn't be an issue, just double check it is on a 20AMP circuit and that the outlet is also rated 20AMP, but of course I couldn't tell which outlet was on which circuit. I didn't want to have to guess or start flipping breakers to see what turns off, so I looked online. I was originally just hoping for a test plug that could give me some sort of further information. I already have the ones that just tell you if the outlet is wired correctly. I was SO pumped when I found out this thing existed and wasn't crazy expensive. I couldn't wait for it to get here. I tried it out and I was able to quickly make sure the outlets, including GFI, were wired correctly (because the plug section also performs this function) and which circuit they were on. It saved so much time and messing around and gives me a great option for future situations that are similar. I have even already lent it to a couple of friends who didn't know this technology existed and were also very excited to make use of it. Using the tester can be a little delicate, but I did look at some other reviews that were helpful. Basically you start by plugging in the dongle to the outlet you want to find the breaker for, then you start sliding the handle along with the tip making contact along the center of each circuit breaker. Then you keep turning down the sensitivity until it only beeps on one breaker switch and that is the loop that the plug is attached to. When it gets the test signal from the plug, the handle frantically but rhythmically beeps. It takes a few tries to recognize it, but it is a distinct sound. The sensitivity adjustment has to happen every time you use it, as far as I can tell, but after the first time it is much easier because you know what to listen for.

## Frequently Bought Together

- Extech - 1218G94EA - CB10 Circuit Breaker Finder, Locates fuses/Breakers, Tests receptacles and GFCI Circuits
- Klein Tools RT250 GFCI Outlet Tester with LCD Display, Electric Voltage Tester for Standard 3-Wire 120V Electrical Receptacles
- Klein Tools NCVT1P Voltage Tester, Non-Contact Low Voltage Tester Pen, 50V to 1000V AC, Audible and Flashing LED Alarms, Pocket Clip

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-26*