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tunabreath 43.6K Views
Jan 26, 2026 9:18 PM

Fluke BK120 SmartTrace Breaker Finder & Socket Tester

$59

$80

26% off
+ Free Shippingat Amazon
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Deal Details
Update: This popular deal is still available.

Amazon has Fluke BK120 SmartTrace Breaker Finder & Socket Tester for $59. Shipping is free.

Home Depot also has Fluke BK120 SmartTrace Breaker Finder & Socket Tester for $59. Shipping is free. Otherwise, select ship to store pick up where available.

Thanks to Community Member tunabreath for finding this deal.

Product Description:
  • Stop the guesswork, ensure safety, and save time with the BK120 - your one-stop shop for effortless circuit identification and voltage detection. The BK120 is a versatile tool designed for electricians, homeowners, and maintenance professionals. This user-friendly system streamlines electrical work, circuit tracing, and troubleshooting, making it an essential addition to any toolbox.
  • Locate the correct breaker quickly and accurately
  • Built-in GFCI Tester
  • Low battery indicator
  • Conserve battery life with auto sleep mode
  • Illuminate your workspace for clear visibility in low-light environments
  • CAT III 150 V safety rated

Editor's Notes

Written by megakimcheelove | Staff
  • About this Deal:
    • Our research indicates that this is $18.79 lower (24.2% savings) than the next best available price from a reputable merchant with prices starting from $77.79 at the time of this post.
    • While supplies / offer lasts.
    • Please see the original post for additional details and give the WIKI and forum comments a read for helpful discussion.
  • About this Store:

Original Post

Written by tunabreath
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Update: This popular deal is still available.

Amazon has Fluke BK120 SmartTrace Breaker Finder & Socket Tester for $59. Shipping is free.

Home Depot also has Fluke BK120 SmartTrace Breaker Finder & Socket Tester for $59. Shipping is free. Otherwise, select ship to store pick up where available.

Thanks to Community Member tunabreath for finding this deal.

Product Description:
  • Stop the guesswork, ensure safety, and save time with the BK120 - your one-stop shop for effortless circuit identification and voltage detection. The BK120 is a versatile tool designed for electricians, homeowners, and maintenance professionals. This user-friendly system streamlines electrical work, circuit tracing, and troubleshooting, making it an essential addition to any toolbox.
  • Locate the correct breaker quickly and accurately
  • Built-in GFCI Tester
  • Low battery indicator
  • Conserve battery life with auto sleep mode
  • Illuminate your workspace for clear visibility in low-light environments
  • CAT III 150 V safety rated

Editor's Notes

Written by megakimcheelove | Staff
  • About this Deal:
    • Our research indicates that this is $18.79 lower (24.2% savings) than the next best available price from a reputable merchant with prices starting from $77.79 at the time of this post.
    • While supplies / offer lasts.
    • Please see the original post for additional details and give the WIKI and forum comments a read for helpful discussion.
  • About this Store:

Original Post

Written by tunabreath

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Top Comments

Ekeenan86
885Comments
68Reputation
Very mixed reviews on this, may depend on the panel type or how it's wired. Going with Home Depot on this deal as the return policy is much better than Amazon.
Go to Comment
FuschiaCaribou204
140Comments
18Reputation
i have the klein one for about this price range. is this one much better? With the klein i've had issues not being able to find the breaker. it would just ring at multiple breakers.
Go to Comment

Community Reviews

The Fluke BK120 is a breaker finder and socket tester that stands out for clearer, more reliable tracing than cheaper Klein and Harbor Freight alternatives. It can narrow down the correct breaker, works well on mislabeled circuits, and also doubles as a non contact voltage detector. The kit is easier to use when the panel is not a wiring mess, and accessory adapters can help with light sockets or alligator clip connections. The main caution is that breaker tracing is not exact, so panel type and wiring can affect results and verification is still needed.

Common Questions (5)

  • The Fluke BK120 is reported to give a clearer signal and settle on one breaker, while the Klein ET310 can ring on multiple breakers or give unclear readings. It also does not need a learning pass and can double as a non-contact voltage detector.

    still_loadingltonmgeoffriauFuschiaCaribou204

  • It is not 100% reliable and can depend on panel type and wiring, especially in messy or unusual setups like shared neutrals or poorly labeled circuits. It still can narrow the breaker location, but you should verify before touching wires.

    Ekeenan86G1GRANDEURE4300voltairesb

  • Cheaper options exist, including Harbor Freight's Circuit Detective and Amazon units around $20, but the BK120 is favored for clearer breaker identification and easier use. The tradeoff is price, so the value depends on how often you need accurate tracing and how much you want a better return policy from Home Depot.

    GreenLaborer6256comebackcarljohnyguysreeves3

  • Yes, it can save time when outlets are mislabeled or when a breaker controls unexpected rooms or floors. It is useful for documenting circuits and narrowing down the correct breaker before outlet swaps or other electrical work.

    wrongsalamiFairSoda312AndrewinMDWineWomenSong

  • The BK120 can be paired with accessory kits that use alligator clips, and a simple Edison screw-in to outlet adapter can help when tracing a light socket. A 3-to-2 outlet adapter is also inexpensive if you need one.

    doubleedgedpensmarttchrismnyc

AI-generated summary based on comments from the community. Updated ago

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64 Comments

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Feb 4, 2026 1:12 AM
3.3K Comments
Joined Sep 2011
E4300Feb 4, 2026 1:12 AM
3.3K Comments
Quote from sidewinder33625 View quoted comment :
how often do you check breakers to need something like this?
Bad light bulb or appliance/motor can trip breaker when energized. Perhaps 1-2 times in a decade. I simply unplug the device and flip the breaker back to the ON position to restore the power. No need to waste $ on any tool unless the breaker does not stay ON.
1
Feb 4, 2026 3:39 AM
84 Comments
Joined Nov 2016
still_loadingFeb 4, 2026 3:39 AM
84 Comments
Quote from Ekeenan86 View quoted comment :
Very mixed reviews on this, may depend on the panel type or how it's wired. Going with Home Depot on this deal as the return policy is much better than Amazon.
I had a lot better results with this Fluke breaker finder than the Klein tools one. The Klein tools one required 2 passes over the panel, first a learning pass and then a detection pass. But it'd always beep on 3-4 different breakers on the 2nd pass. The Fluke doesn't need a learning pass and it'd always settle on one breaker after 2 passes. The Fluke also doubles as a non-contact voltage detector. I did like that the Klein tools one had built in storage for the transmitter though.
Feb 4, 2026 1:51 PM
340 Comments
Joined Feb 2013
WineWomenSongFeb 4, 2026 1:51 PM
340 Comments
Quote from sacksyboy View quoted comment :
It is way better than the Klein, and that has great reviews. While the instructions are really straightforward, I would put many of the negative reviews down to user error.
Have the Klien and if the panel is not a spaghetti mess it works very well. I use it to track down mislabeled circuits labeled by licensed Union Electricians. The job was said to have been "done by Union Licensed Electricians" but probably some 80 year old licensed Union Electrician living g miles away signed off on the job for a fee. Go figure.
Feb 4, 2026 2:30 PM
9 Comments
Joined Nov 2009
chrismnycFeb 4, 2026 2:30 PM
9 Comments
Quote from steppedinit View quoted comment :

You have to do it the old fashioned way. Turn the light on, then have someone else flip the breakers until you find the right one.

I have the same issue with an outdoors light I want to replace.
Get an Edison screw in to outlet adapter. Screw it in to the bulb socket and plug in the tracer.
Feb 4, 2026 6:03 PM
272 Comments
Joined Jan 2018
anandbannedFeb 4, 2026 6:03 PM
272 Comments
I'm at the age where my tolerance for purchasing cheap questionable tools is declining rapidly. Hopefully this is better than the $25 one I have in my electrical bag atm.
Feb 4, 2026 11:00 PM
466 Comments
Joined Dec 2007
bettermn11Feb 4, 2026 11:00 PM
466 Comments
These are great
Deal Editor
Feb 10, 2026 8:49 PM
17.3K Comments
Joined Nov 2008
megakimcheelove
Deal Editor
Feb 10, 2026 8:49 PM
17.3K Comments
This deal is still available

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Feb 10, 2026 8:57 PM
32 Comments
Joined Oct 2013
ltonFeb 10, 2026 8:57 PM
32 Comments
Quote from anandbanned View quoted comment :
I'm at the age where my tolerance for purchasing cheap questionable tools is declining rapidly. Hopefully this is better than the $25 one I have in my electrical bag atm.
Confirmed. This Fluke is much better than the Kleen Tools version. Tested both side by side. Fluke gives clearer signal which only indicate one breaker vs multiple breakers like the Kleen Tool
Feb 10, 2026 9:09 PM
1.4K Comments
Joined Sep 2022
TealIdea227Feb 10, 2026 9:09 PM
1.4K Comments
I'm babysitting a house with aluminum wiring and shotgun-shell fuses. Power is off at the meter. There are very few circuits, all unlabeled. There is a hardwired pump with a control panel that I'd like to supply with external power. The control panel is on a post that is leaning over above a mud hole. It looks complicated. I'm wondering if there is a chance that there is an outlet on the same circuit that I can run a babykiller cord to. How much of a gamble is it that this, with an alligator clip adapter, will be reliable enough to definitively rule this out (or in)?
Feb 10, 2026 9:17 PM
3.6K Comments
Joined Jun 2017
NikonShrFeb 10, 2026 9:17 PM
3.6K Comments
Get dat fluke tester lol
Feb 10, 2026 9:23 PM
283 Comments
Joined Dec 2014
QuietToddlerFeb 10, 2026 9:23 PM
283 Comments
I need to get off SD, bought too many items that I only use once in a blue moon
Feb 10, 2026 9:35 PM
1.4K Comments
Joined Aug 2013
johnyguyFeb 10, 2026 9:35 PM
1.4K Comments
Quote from sidewinder33625 View quoted comment :
how often do you check breakers to need something like this?
This is soo overpriced !!
You can buy a set of this from Milwaukee, Klein or any other brand for much less and it will safely do the same thing!!
There is nothing special about this fluke one
All hyped up!
1
Feb 10, 2026 9:44 PM
100 Comments
Joined Sep 2014
CORBSFeb 10, 2026 9:44 PM
100 Comments
I bought one of these a year ago or so and returned it. Couldn't even remotely detect the correct breaker. Ended up just plugging in a light to each socket testing it that way and found that the readings from this Fluke were way off.
Feb 10, 2026 9:47 PM
1.1K Comments
Joined May 2012
lacosa2006Feb 10, 2026 9:47 PM
1.1K Comments
been looking for this!

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Feb 10, 2026 10:14 PM
1.4K Comments
Joined Aug 2013
johnyguyFeb 10, 2026 10:14 PM
1.4K Comments
[QUOTE=johnyguy;182440684
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