---
product_id: 147860932
title: "Klein Tools ET300 Digital Circuit Breaker Finder"
brand: "klein tools"
price: "A$2"
currency: AUD
in_stock: false
url: https://www.desertcart.com.au/products/147860932-klein-tools-et300-digital-circuit-breaker-finder
store_origin: AU
region: Australia
---

# 90-120V operation range 1000 ft transmitter range Auto power-off battery saver Klein Tools ET300 Digital Circuit Breaker Finder

**Brand:** klein tools
**Price:** A$2
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Find circuits faster, work smarter, and never miss a beat!

## Quick Answers

- **What is this?** Klein Tools ET300 Digital Circuit Breaker Finder by klein tools
- **How much does it cost?** A$2 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/147860932-klein-tools-et300-digital-circuit-breaker-finder)

## Best For

- klein tools enthusiasts

## Why This Product

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

## Key Features

- • **Designed for Pros:** Optimized for 90-120 Volt circuits, perfect for professional-grade electrical work.
- • **Compact & Lightweight:** Weighing just 3.2 ounces and slim 13mm profile for easy handling on the go.
- • **Reach Far, Work Smart:** Strong transmitter covers up to 1,000 feet for effortless circuit tracing.
- • **Precision You Can Trust:** Microprocessor-controlled detection ensures reliable and accurate circuit identification.
- • **Battery Life That Keeps Up:** Auto power-off feature maximizes battery longevity so you stay powered longer.

## Overview

The Klein Tools ET300 Digital Circuit Breaker Finder is a lightweight, battery-powered device designed for professional electricians and managers who demand precision. Featuring a microprocessor-controlled system, it reliably identifies circuits within a 90-120V range and transmits signals up to 1,000 feet. Its auto power-off function extends battery life, making it an essential tool for efficient, on-the-go electrical troubleshooting.

## Description

The Klein Tools ET300 Digital Circuit Breaker Finder quickly, accurately, and automatically finds the corresponding circuit breaker of any 120V standard outlet. The flashing arrow indicator lets you quickly identify when you've got a hit. The strong transmitter reaches up to 1,000 feet. The auto power-off feature saves battery life and gives you one less thing to worry about. There is an Accessory kit available (Catalog No. 69411) which includes a light socket and alligator clip adapters. Crafted for optimum durability, reliability and functionality, Klein's innovative line of test and measurement equipment is engineered with the user in mind. Designed for, and by electricians, our electrical testers provide the latest in innovative, time-saving features that professionals require. Since 1857, the company operated by Mathias Klein and his descendants to the fifth generation, has grown and developed along with the telecommunications and electrical industries where Klein pliers first found major usages. Today, Klein Tools Inc represents much more than Klein pliers. The company's product line has broadened to include virtually every major type of hand tool used in construction, electronics, mining and general industry in addition to the electrical and telecommunications fields. Internationally, Klein's products are available around the world through a well-established network of agents and distributors who stock the products that are required for their particular markets. Klein's reputation as a leading producer of professional-quality products is global

## Features

- Auto power-off feature conserves and extends battery life
- Strong transmitter reaches distances up to 1,000 feet
- 90-120 Volt operation
- Auto power-off feature saves battery life
- Microprocessor controlled for more reliable identification

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Klein Tools |
| Power Source | Battery Powered |
| Style | Digital |
| Item Weight | 3.2 Ounces |
| Item dimensions L x W x H | 13 Millimeters |
| Min. Operating Voltage | 120 Volts |
| Maximum Operating Voltage | 120 Volts |
| UPC | 745654152797 635665195107 757073227468 785533725513 696504812708 787721821755 092644693021 640025709528 756635040002 733353249337 |
| Manufacturer | Klein Tools |
| Global Trade Identification Number | 00092644693021 |
| Item model number | ET300 |
| ASIN | B003LHJSY8 |

## Product Details

- **Brand:** Klein Tools
- **Power Source:** Battery Powered
- **Style:** Digital
- **Item Weight:** 3.2 Ounces
- **Item dimensions L x W x H:** 13 Millimeters

## Images

![Klein Tools ET300 Digital Circuit Breaker Finder - Image 1](https://m.media-amazon.com/images/I/51-TpSZ77HL.jpg)
![Klein Tools ET300 Digital Circuit Breaker Finder - Image 2](https://m.media-amazon.com/images/I/61dkcLciMBL.jpg)
![Klein Tools ET300 Digital Circuit Breaker Finder - Image 3](https://m.media-amazon.com/images/I/61s0lECuhWL.jpg)
![Klein Tools ET300 Digital Circuit Breaker Finder - Image 4](https://m.media-amazon.com/images/I/712VWCs55KL.jpg)
![Klein Tools ET300 Digital Circuit Breaker Finder - Image 5](https://m.media-amazon.com/images/I/71PJU82RO5L.jpg)

## Questions & Answers

**Q: How dose this work ?**
A: This unit is made up of 2 parts as you can see. The smaller part which you plug in to a outlet inside your house This is the Transmitter. The larger part is the receiver. Once you plug in the transmitter you can then scan all the circuit breakers within your power panel. As you can down through all the breakers the one that is connected to the outlet in the house will be transmitting and when the receiver unit passes over that breaker it will receive the tone and light up indicating that this circuit breaker is associated with the outlet inside your home. Some times you will get false indications so you should double check the operation if you are unsure. After finding the correct breaker you can then switch off that breaker and then check the outlet in the house and verify that it is no longer hot (powered)

**Q: can this item find the breaker if the power is off**
A: No the transmitter needs the power from the outlet to send the signal down the line. The transmitter is the device you plug into the outlet.

**Q: Does the plug in part have an indicator light on it to confirm its operational and that the outlet is live?**
A: Yes there is a red light that comes on when the plug is plugged into a live outlet.

**Q: Can i plug it in and see what Outlets are on that circuit breaker can I use the finder down the line at the different outlets on that breaker to trace**
A: Your question is unclear, but I think you want to use it backwards. The unit has a transmitter, which you connect at an outlet (via duplex plug, clipleads, or standard light-bulb-socket adapter). Then at the service panel, you run the receiver down the circuit breakers, and it tells you (most of the time) which CB feeds that outlet. It does not allow you to select a CB and then use the device somehow to find all outlets that CB feeds. (I would love that feature as well.)

## Frequently Bought Together

- KLEIN TOOLS Circuit Breaker Finder, Finds Electrical Circuit Breaker of 120V Standard Electrical Outlet ET300
- KNIPEX Ergostrip Universal Stripping Tool for Right-Handers, 135 mm, Round Cable, Coax Cables, Data Cables, Wire Stripper, 16 95 01 SB
- CK Re-threading Tool M3.5x0.6

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-12*