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tunabreath 43.7K 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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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

Community Voting

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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.

  • homeowners trying to find a specific breaker for an outlet swap because it can narrow down the breaker location and make testing/documenting circuits easier, even if you still verify before touching wires.

    G1GRANDEURFairSoda312

  • DIYers who have had trouble with Klein-style units because this Fluke was reported to settle on the correct breaker after a couple passes (instead of beeping on multiple breakers) and it also doubles as a non-contact voltage detector.

    still_loadinglton

  • people dealing with mislabeled breakers because users said it helped identify poorly labeled breakers in their house (even if it may not do everything the Fluke does).

    wrongsalami

  • renters or homeowners who want a practical workflow for tracing when the wiring is confusing because commenters recommend energizing one breaker at a time and verifying 120 VAC at the outlet with a cheap multimeter, which pairs well with using the finder to get close.

    E4300

  • buyers who want a better return experience while they test it on their own panel because community members said Home Depot is preferable to Amazon due to a better return policy.

    Ekeenan86

  • people expecting it to be perfectly reliable on any panel because multiple commenters warned the technology is not 100% reliable and may ring near adjacent breakers or even fail to detect the correct one.

    E4300hy_tekCORBS

  • buyers who are comparing it to cheaper alternatives and want the same performance for much less because some users said the Fluke couldn't detect the correct breaker and that other brands can do the same job for less.

    CORBSjohnyguy

  • homeowners with unusual wiring where outlets are tied across floors/areas because one user said it took 4-6 breaker tries to find the correct one even after labeling over years.

    AndrewinMD

  • people with shared-neutral wiring across multiple circuits because commenters said common neutral can make circuit tracing much more complicated, and that can undermine how confidently you can rule circuits in or out.

    voltairesb

Common Questions (5)

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

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64 Comments

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Feb 11, 2026 1:38 AM
5.1K Comments
Joined Jun 2008
AndrewinMDFeb 11, 2026 1:38 AM
5.1K Comments
Received mine from HD and tested on two different breakers. Worked like a charm -- very easy to use and very accurate.
Feb 11, 2026 2:55 AM
135 Comments
Joined May 2005
hounddog66Feb 11, 2026 2:55 AM
135 Comments
I'm curious, why does this have such a high SD score, currently 170? It is always this price. Are the scores for how good the deal is or how people feel about the tool?
Feb 11, 2026 3:27 AM
3.7K Comments
Joined Jan 2007
sreeves3Feb 11, 2026 3:27 AM
3.7K Comments
How is this worth twice as much as this one from Harbor Freight for $28? Are you paying extra just for the Fluke brand? https://www.harborfreight.com/cir...96934.html
Feb 11, 2026 7:58 AM
554 Comments
Joined Jul 2016
ChrisFuFeb 11, 2026 7:58 AM
554 Comments
Anyone know if this is strong enough to sense a wire through the wall?
Feb 11, 2026 10:10 AM
679 Comments
Joined Dec 2007
adnjFeb 11, 2026 10:10 AM
679 Comments
Quote from eeagle View quoted comment :
Thanks, but that is the reason I need to change out the switch, the light not longer comes on, so guess I need to check for voltage at the switch and see which breaker stops the power. I was hoping there was an easier way to find the breaker w/o all the breaker flipping. Oh and to make matters harder it is a 3 way switch.
If you can`t get a light to power on and the circuit is uses 3-way switches, then BOTH switches would have to fail.
Feb 11, 2026 11:11 AM
135 Comments
Joined May 2005
hounddog66Feb 11, 2026 11:11 AM
135 Comments
Quote from adnj View quoted comment :
If you can`t get a light to power on and the circuit is uses 3-way switches, then BOTH switches would have to fail.
Not true. If a switch fails to pass power to the traveller wires, the light will not power on , even if one of the 3way switches is good.
Feb 11, 2026 1:07 PM
4.7K Comments
Joined May 2007
hy_tekFeb 11, 2026 1:07 PM
4.7K Comments
Quote from FuschiaCaribou204 View quoted comment :
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.
That is common behavior for these types of detectors.It's not an exact science. The receiver may ring near other breakers next to the one you want but it's always a much stronger signal on only one breaker. Takes a bit of getting used to. This from an electrician with 40 years of experience.

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Feb 11, 2026 6:05 PM
649 Comments
Joined Dec 2011
mgeoffriauFeb 11, 2026 6:05 PM
649 Comments
Quote from johnyguy View quoted comment :
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!
Disagree. I just bought the Klein ET310 kit and I couldn't get a clear reading on multiple attempts on different circuits. I then bought this Fluke one and it worked immediately. Plus it doesn't beep at me constantly while in use like the Klein.

The Klein is going back, I'm keeping the Fluke.
Feb 11, 2026 9:50 PM
1.4K Comments
Joined Aug 2013
johnyguyFeb 11, 2026 9:50 PM
1.4K Comments
Quote from mgeoffriau View quoted comment :
Disagree. I just bought the Klein ET310 kit and I couldn't get a clear reading on multiple attempts on different circuits. I then bought this Fluke one and it worked immediately. Plus it doesn't beep at me constantly while in use like the Klein.

The Klein is going back, I'm keeping the Fluke.
i mixed this up with something else ...
Feb 11, 2026 10:20 PM
679 Comments
Joined Dec 2007
adnjFeb 11, 2026 10:20 PM
679 Comments
Quote from hounddog66 View quoted comment :
Not true. If a switch fails to pass power to the traveller wires, the light will not power on , even if one of the 3way switches is good.
A valid point.
Feb 12, 2026 12:39 PM
523 Comments
Joined Jul 2022
HonestWealth2655Feb 12, 2026 12:39 PM
523 Comments
Can purchase at Home Depot via AAFES and get 10% off and no tax (if you qualify to use Mil Exchange)
Feb 12, 2026 4:58 PM
35 Comments
Joined Nov 2011
voltairesbFeb 12, 2026 4:58 PM
35 Comments
Quote from FuschiaCaribou204 View quoted comment :
i have a klein one that i bought for about $60 a while ago.. It does not work very well at all. It will ring on multiple breakers none of which are the correct ones. I thought it was just user error. but looked and read more about it and it is a wide spread thing. There are some people that say it works good for them but i assume that might be under perfectly ideal conditions. Watch this video. This was the experience i had with the klein ones and im assuming other cheap ones would be the same.
https://www.youtube.com/watch?v=ThAmDDsz05c
Its actually not user error, nor is it because the device was wrong. Its because the house was wired with common neutral across multiple circuits at some point. If you ever want to test wether that has happened, simply install a modern arc fault circuit interrupter (as required by code in many places now) and it will immediately trip every time. That same shared neutral will make circuit tracing muchmore complicated.
Feb 13, 2026 4:52 AM
142 Comments
Joined Dec 2021
CleverPlant844Feb 13, 2026 4:52 AM
142 Comments
Fluke has never failed me.
Feb 14, 2026 6:50 PM
140 Comments
Joined Oct 2022
FuschiaCaribou204Feb 14, 2026 6:50 PM
140 Comments
bought this and tested it. it works much better than the klein one.

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Feb 17, 2026 8:36 PM
112 Comments
Joined Nov 2016
doubleedgedpenFeb 17, 2026 8:36 PM
112 Comments
Quote from sidewinder33625 View quoted comment :
how often do you check breakers to need something like this?
If you are an electrician, finding which breaker you need to turn off could be something that you do multiple times every day.

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