---
product_id: 2175290
title: "40180 Tone Generator and Amplifier Probe Circuit Finder Kit - Heavy Duty Wire Tracer and Cable Tester with Alligator Clips, RJ11/RJ45 Connectors - Battery Powered Wire Tracking Tool"
brand: "extech"
price: "NT$8859"
currency: TWD
in_stock: true
reviews_count: 13
category: "Extech"
url: https://www.desertcart.tw/products/2175290-40180-tone-generator-and-amplifier-probe-circuit-finder-kit-heavy
store_origin: TW
region: Taiwan
---

# Professional-grade tone generator Amplifier probe with adjustable volume Versatile alligator clip connectors 40180 Tone Generator and Amplifier Probe Circuit Finder Kit - Heavy Duty Wire Tracer and Cable Tester with Alligator Clips, RJ11/RJ45 Connectors - Battery Powered Wire Tracking Tool

**Brand:** extech
**Price:** NT$8859
**Availability:** ✅ In Stock

## Summary

> 🎯 Nail every wire trace with pinpoint accuracy and zero guesswork!

## Quick Answers

- **What is this?** 40180 Tone Generator and Amplifier Probe Circuit Finder Kit - Heavy Duty Wire Tracer and Cable Tester with Alligator Clips, RJ11/RJ45 Connectors - Battery Powered Wire Tracking Tool by extech
- **How much does it cost?** NT$8859 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/2175290-40180-tone-generator-and-amplifier-probe-circuit-finder-kit-heavy)

## 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

- • **Trace Like a Pro:** Pinpoint telephone, network, and coax cables with precision and speed.
- • **Built for the Field:** Durable, lightweight design made for telecom, IT, and electrical pros on the go.
- • **Instant Continuity Check:** Detect open circuits, shorts, and crossed pairs in seconds to slash troubleshooting time.
- • **Secure Connections Every Time:** Insulated alligator clips ensure reliable signal injection on any cable type.
- • **Customizable Audio Sensitivity:** Adjust probe volume for crystal-clear tone detection even in noisy environments.

## Overview

The Extech 40180 Tone Generator and Amplifier Probe Kit is a professional-grade tool designed for telecom, networking, and electrical technicians. It features a powerful tone generator with RJ11/RJ45 connectors and insulated alligator clips for secure cable testing. The amplifier probe offers adjustable volume and sensitivity to detect tones clearly, even in noisy environments. Ideal for tracing wires, testing continuity, and identifying cable faults quickly and reliably.

## Description

Product Description The Extech 40180 Tone Generator and Amplifier Probe Circuit Finder Kit is a professional solution for tracing and testing telephone lines, network cables, and other low-voltage wiring. Featuring a powerful tone generator with insulated alligator clips, this kit allows technicians to quickly inject a signal into cables for easy identification. The included amplifier probe detects and amplifies the tone, helping locate wires behind walls, ceilings, and junction boxes. With adjustable sensitivity, clear audio output, and durable construction, the Extech 40180 is ideal for troubleshooting continuity issues, identifying cable breaks, and verifying correct wiring during installations. Designed for telecom, IT networking, and electrical professionals, it delivers reliability and precision in every job. From the Manufacturer Non-contact probe audibly identifies selected wire or cable. Trace phone, computer network and coax cables. Tone generator is terminated with RJ11 and RJ45 connectors plus alligator clips. Selectable continuous or variable tone. Continuity and ring/tip identification test

Review: Fast delivery ,ease of use and time saver - I’ve been an auto tech over 20 years and I don’t know how I ever got by without this tool.But first thank you desertcart for the very quick delivery !! This device Is easy to use and hasn’t failed me once ,It saves time when pinpointing a wire issue.I Love it Used it many times now and it looks brand new
Review: As good as it gets - I have been using this "toner" kit for more than a year now on a nearly daily basis and it works very well. I use it in an industrial environment for identifying circuit wiring for things such as street and area lighting, motor wiring, instrumentation wiring and the like. It is one of the most used and most useful items in my tool collection and has proven to be very durable and reliable over this entire time. This is a great product for what is was designed to do.

## Features

- Reliable Wire Tracing & Tone Generation - Quickly identify, trace, and test telephone lines, network cables, and other wiring with a professional-grade tone generator and probe.
- Easy Continuity & Line Testing - Detect open circuits, shorts, crossed pairs, and cable breaks instantly, reducing troubleshooting time during telecom and electrical work.
- Amplifier Probe with Adjustable Volume - Probe features a sensitivity dial and durable construction for clear tone detection, even in noisy environments.
- Versatile Alligator Clip Connectors - Includes insulated test leads with alligator clips for secure connections to various cable types, ensuring accurate tone injection.
- Ideal for Telecom, Networking & Installations - Perfect for technicians, electricians, and IT professionals handling telephone, data, and low-voltage wiring installations.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Extech |
| Color | Black |
| Item Weight | 0.28 Kilograms |
| Item dimensions L x W x H | 9 x 2.3 x 1 inches |
| Power Source | Corded Electric |
| Style | 40180 |

## Product Details

- **Brand:** Extech
- **Color:** Black
- **Item Weight:** 0.28 Kilograms
- **Power Source:** Corded Electric
- **Style:** 40180

## Images

![40180 Tone Generator and Amplifier Probe Circuit Finder Kit - Heavy Duty Wire Tracer and Cable Tester with Alligator Clips, RJ11/RJ45 Connectors - Battery Powered Wire Tracking Tool - Image 1](https://m.media-amazon.com/images/I/511CFHWq73L.jpg)

## Questions & Answers

**Q: Do you have to use the transmitter or can it locate passive cables behind a wall without it?**
A: You can locate 60Hz lines behind a wall to some extent, without the transmitter:  The probe will make a louder 120Hz buzzing noise as it is moved closer to cables.

**Q: If I have both ends of a house wire exposed, how would I hook up to check if I have the correct wire?**
A: You connect the transmitter to a pair of wires in the room, either raw ends or in an RJ11 telephone jack.  Turn it on.  Turn on the probe and check that the toner is working.  Go go to NID, where all the house wiring starts.  The tone can be hear is you are near the wire, louder on the outside of the cable, very loud when actually touch the correct pair of wires.

**Q: Is it easy for a beginner to use? Does it easily hook up to the wire or do I need to cut into the plastic surrounding the wire?**
A: It's easy to connect and you don't need to cut into the insulator, but the problem I had with the tool is:  the signal is so sensitive that I wasn't able to  tell if the wire was cut, because all the wires I was testing were in a harness

**Q: How many feet will this work for?**
A: i was using it very successfully at over 70 feet.  The lines I was tracing were up and over in a building.  So i really do not know the exact distance.  but it worked great

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fast delivery ,ease of use and time saver
*by F***O on December 24, 2025*

I’ve been an auto tech over 20 years and I don’t know how I ever got by without this tool.But first thank you AMAZON for the very quick delivery !! This device Is easy to use and hasn’t failed me once ,It saves time when pinpointing a wire issue.I Love it Used it many times now and it looks brand new

### ⭐⭐⭐⭐⭐ As good as it gets
*by A***L on June 27, 2007*

I have been using this "toner" kit for more than a year now on a nearly daily basis and it works very well. I use it in an industrial environment for identifying circuit wiring for things such as street and area lighting, motor wiring, instrumentation wiring and the like. It is one of the most used and most useful items in my tool collection and has proven to be very durable and reliable over this entire time. This is a great product for what is was designed to do.

### ⭐⭐⭐⭐ GOOD tool!
*by T***J on April 19, 2015*

GOOD tool!! remember: turn off power to the line youre testiong: extraneous noise can confuse your interpretation.. tkjtkj, mech.eng., m.d. ******************* My criteria: 5-star: does the job well, with extra advantages 4-star: does the job well 3-star: helpful but doesn't accommodate all needs that one would expect 2-star: sketchy performance at best 1-star: Fails in significant ways ; but they showed up for evaluation 0-star: Where are they hiding???

## Frequently Bought Together

- Extech 40180 Tone Generator and Amplifier Probe Circuit Finder Kit,Black, Heavy Duty Wire Tracer
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**Shop now:** [https://www.desertcart.tw/products/2175290-40180-tone-generator-and-amplifier-probe-circuit-finder-kit-heavy](https://www.desertcart.tw/products/2175290-40180-tone-generator-and-amplifier-probe-circuit-finder-kit-heavy)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-13*