Klein Tools Digital Circuit Breaker Finder-ET300 at The Home Depot
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Klein Tools

Model # ET300

Internet # 202330830

Store SKU # 365518

Digital Circuit Breaker Finder

Klein Tools Digital Circuit Breaker Finder

This item has been discontinued.
The Home Depot no longer carries this specific product.

$41.37 / each
Item cannot be shipped to the following state(s): GU,PR,VI


Model # ET300

Internet # 202330830

Store SKU # 365518

Quickly and accurately find the corresponding circuit breaker of 120-volt standard outlets with the Klein Tools Digital Circuit Breaker Finder. Featuring an LED display, this circuit breaker finder has an arrow that flashes for easy identification and a transmitter that reaches distances of up to 1,000 ft. The included 9-volt battery features a long life thanks to the automatic shut off.

  • Finds the corresponding circuit breaker of 120-volt standard outlets without interruption of service
  • Power can be left on for convenience
  • Strong transmitter reaches distances of up to 1,000 ft.
  • LED display and flashing arrow indicator for easy identification
  • Includes one 9-volt battery
  • Auto shutoff provides long battery life by conserving power
  • 90 - 120-volt operation

Info & Guides

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Assembled Depth (in.)  1.3 in  Assembled Height (in.)  10.5 in 
Assembled Width (in.)  6.3 in  Backlit  No 
Batteries Included  Yes  Battery Charger Included  No 
Battery Power Type  Alkaline  Battery Size  9-volt 
Control Type  Manual  Data Log/Record  No 
Data hold  No  Display Type  LED 
Low Battery Indicator  Yes  Manufacturer Warranty  2 Years 
Measures/Detects  Voltage  Number of Batteries Required 
Product Depth (in.)  0.9 in  Product Height (in.)  6 in 
Product Weight (lb.)  0.2 lb  Product Width (in.)  1.9 in 
Reference Scale Included  No  Returnable  90-Day 
Test Meter Type  Other Meter/Tester 


Rated 3.4 out of 5 by 46 reviewers.
Rated 5 out of 5 by Worked great for me! Bought this and a Sperry (from another store) and tested both side by side, and this was way more accurate. If you follow the instructions which say to run it up and down the whole panel first (it gives some false positives initially), then it worked really accurately. Identified only the fuse in question usually or worst case, the one next to it, as well as the correct one. July 27, 2014
Rated 5 out of 5 by Circuit tracing made easy Perfect for when you are doing electrical work on your home and need to find a lost, unknown electrical circuit. June 7, 2014
Rated 4 out of 5 by Works quite well, if you follow the instructions and apply some common sense It is important to do the calibration scan first and then do the second scan to identify the correct breaker. There could be some ambiguity with breakers that are part of quad breakers with 2 pole circuits. Also, if more than one breaker is detected, it is quite simple to turn them off one by one to zero in on the correct one. On the whole, I am happy with the device and think it is a good value for the price. The companion kit is quite useful for use with light sockets and bare wires. December 31, 2013
Rated 3 out of 5 by Helpful but not perfect Only accurate about 75% of the time. I would still purchase again, because of the time it saved me. August 26, 2014
Rated 2 out of 5 by Horrible Reception didn't work more than 20 feet away Unfortunately, this item had to go back twice, did not work more than 20 feet away from circuit breakers. I tried 2 of them, and the same results. I guess you get what you pay for. I'd buy a cheaper one that I would expect this problem from before spending this much on this again. August 14, 2014
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