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tunabreath 13.2K Views
Feb 22, 2026 12:19 PM

Bosch Professional Multi-Function Stud Finder/Wall Scanner & Live Wire Detector

$71

$100

28% off
+ Free S/Hat Amazon
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Deal Details
Amazon has Bosch Professional Multi-Function Stud Finder/Wall Scanner & Live Wire Detector (GMS120-27) on sale for $71.10. Shipping is free.

Thanks to community member tunabreath for finding this deal

Note, product must be sold/shipped by Amazon

Includes
  • Bosch Professional Multi-Function Stud Finder/Wall Scanner & Live Wire Detector (GMS120-27)
  • 1x Bosh Protective Soft Pouch
  • 2x AA Batteries

Editor's Notes

Written by Discombobulated | Staff
  • Price Research
    • At the time of research, this product is $7.90 lower (10% savings) than the next best available price from a reputable merchant with prices ranging from $79.
  • About the Deal
    • This pro grade multi-function detector can accurately locate wood studs, metal framing, copper pipes and live AC electrical wiring; great for electricians, plumbers and contractors
    • Product is eligible for refund/replacement within 30-days of purchase
    • Offer valid while promotional price/supplies last
  • Additional Details

Original Post

Written by tunabreath
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has Bosch Professional Multi-Function Stud Finder/Wall Scanner & Live Wire Detector (GMS120-27) on sale for $71.10. Shipping is free.

Thanks to community member tunabreath for finding this deal

Note, product must be sold/shipped by Amazon

Includes
  • Bosch Professional Multi-Function Stud Finder/Wall Scanner & Live Wire Detector (GMS120-27)
  • 1x Bosh Protective Soft Pouch
  • 2x AA Batteries

Editor's Notes

Written by Discombobulated | Staff
  • Price Research
    • At the time of research, this product is $7.90 lower (10% savings) than the next best available price from a reputable merchant with prices ranging from $79.
  • About the Deal
    • This pro grade multi-function detector can accurately locate wood studs, metal framing, copper pipes and live AC electrical wiring; great for electricians, plumbers and contractors
    • Product is eligible for refund/replacement within 30-days of purchase
    • Offer valid while promotional price/supplies last
  • Additional Details

Original Post

Written by tunabreath

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Top Comments

jj14
660Comments
195Reputation
Very unreliable - used it at home right over existing switches and it neither detected the studs, nor the electric wires.
The Franklin 710 works just fine (doesn't have the live wire detector, but at least finds the studs reliably)
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18 Comments

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Feb 22, 2026 3:26 PM
660 Comments
Joined May 2008
jj14Feb 22, 2026 3:26 PM
660 Comments

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Very unreliable - used it at home right over existing switches and it neither detected the studs, nor the electric wires.
The Franklin 710 works just fine (doesn't have the live wire detector, but at least finds the studs reliably)
4
Feb 22, 2026 6:27 PM
65 Comments
Joined Jul 2019
FrapOnYaLapFeb 22, 2026 6:27 PM
65 Comments
Quote from jj14 View quoted comment :
Very unreliable - used it at home right over existing switches and it neither detected the studs, nor the electric wires. The Franklin 710 works just fine (doesn't have the live wire detector, but at least finds the studs reliably)
Franklin all the way!
Feb 23, 2026 3:55 AM
231 Comments
Joined Feb 2019
CMarshall85Feb 23, 2026 3:55 AM
231 Comments
Quote from jj14 View quoted comment :
Very unreliable - used it at home right over existing switches and it neither detected the studs, nor the electric wires. The Franklin 710 works just fine (doesn't have the live wire detector, but at least finds the studs reliably)
And you can get a Franklin with a wire detector.
Feb 23, 2026 5:57 AM
44 Comments
Joined Aug 2022
HonestMammoth6988Feb 23, 2026 5:57 AM
44 Comments
Good deal
Feb 23, 2026 11:21 AM
277 Comments
Joined Nov 2006
tsbrewersFeb 23, 2026 11:21 AM
277 Comments

Our community has rated this post as helpful. If you agree, why not thank

Quote from jj14 View quoted comment :
Very unreliable - used it at home right over existing switches and it neither detected the studs, nor the electric wires.
The Franklin 710 works just fine (doesn't have the live wire detector, but at least finds the studs reliably)
Problem with the Franklin Sensors ones are, they don't last. If you are a home owner and use it a couple times a year, they are fine probably. I own a finish carpentry business and literally have a pouch on my belt specifically to carry one all the time, and I only get about a year or so out of each one. It tends to be the switches that go out, so I hack them and put in a generic push button switch and that gets me another year or two out of them. At $40+ apiece, that isn't good enough. Luckily I picked up about 15 of them when Sam's was closing them out for $7, so I am hoping to run those out to retirement.
1
Feb 23, 2026 1:29 PM
213 Comments
Joined Feb 2015
booch82Feb 23, 2026 1:29 PM
213 Comments
Quote from tsbrewers View quoted comment :
Problem with the Franklin Sensors ones are, they don't last. If you are a home owner and use it a couple times a year, they are fine probably. I own a finish carpentry business and literally have a pouch on my belt specifically to carry one all the time, and I only get about a year or so out of each one. It tends to be the switches that go out, so I hack them and put in a generic push button switch and that gets me another year or two out of them. At $40+ apiece, that isn't good enough. Luckily I picked up about 15 of them when Sam's was closing them out for $7, so I am hoping to run those out to retirement.
So...I have bought about 8 of them so far. Just noticed on the last one I got that it says on the package "Lifetime Warranty". So I registered it on the website and will probably find out in a few months. But you really can't beat the Franklin sensors. There's no going back after you use one.
Feb 23, 2026 3:31 PM
277 Comments
Joined Nov 2006
tsbrewersFeb 23, 2026 3:31 PM
277 Comments
Quote from booch82 View quoted comment :
So...I have bought about 8 of them so far. Just noticed on the last one I got that it says on the package "Lifetime Warranty". So I registered it on the website and will probably find out in a few months. But you really can't beat the Franklin sensors. There's no going back after you use one.
I agree they work about the best for a "budget" one. I believe the warranty says something like, "1 year for commercial use", but I'll look in to it more. Thanks,

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Feb 23, 2026 6:17 PM
186 Comments
Joined Feb 2019
LovelyScene506Feb 23, 2026 6:17 PM
186 Comments
Stud finders at Project Farm: https://www.youtube.com/watch?v=sWMJhfMPWn4
1
Feb 24, 2026 9:02 AM
757 Comments
Joined Mar 2019
trent0210Feb 24, 2026 9:02 AM
757 Comments
Get this one instead of Franklin, same company but cheaper. It has live wire:

https://www.walmart.com/ip/968243...acf103a521
1
Feb 24, 2026 10:15 AM
78 Comments
Joined Nov 2025
alecmed8292Feb 24, 2026 10:15 AM
78 Comments
I put it against me once and it didn't make a sound... not worth the buy
Feb 24, 2026 12:41 PM
96 Comments
Joined Dec 2003
fourinfuryFeb 24, 2026 12:41 PM
96 Comments
Will it play motley crue when it finds a live wire
Feb 24, 2026 1:11 PM
217 Comments
Joined Apr 2017
DonnieYFeb 24, 2026 1:11 PM
217 Comments
Quote from jj14 View quoted comment :
Very unreliable - used it at home right over existing switches and it neither detected the studs, nor the electric wires.
The Franklin 710 works just fine (doesn't have the live wire detector, but at least finds the studs reliably)
was interested in this bosch but i do have the franklin 710 and works very well
Feb 24, 2026 3:56 PM
38 Comments
Joined Aug 2022
Think2XFeb 24, 2026 3:56 PM
38 Comments
My sentiments exactly. Franklin for the win. I moved from OKC to Michigan couple of years ago. I'm an old guy now but had my own trim business back in the day. I still have my tools and my skills and after moving to Michigan, I would locate a stud then move over 16" and there was nothing there. It was crazy. After researching, I found they'd built this house in 1998 using 19.2" spacing on the studs instead of the normal 16". Got a Franklin ProSensor and it's been smooth sailing ever since. Currently refinishing basement into my man cave the stud finder has come in very handy.
1
Pro
Feb 24, 2026 4:27 PM
268 Comments
Joined Nov 2022
doctorshusband
Pro
Feb 24, 2026 4:27 PM
268 Comments
All these things are quirky... I have a DEWALT one and a cheapo Temu one, but go back to the magnet stud finder when I really need to be sure. You can always drill a 1/8" pilot before the actual hole or screw if it really really matters...

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Feb 24, 2026 7:21 PM
247 Comments
Joined Jul 2007
TNTRMSKDFeb 24, 2026 7:21 PM
247 Comments
Quote from jj14 View quoted comment :
Very unreliable - used it at home right over existing switches and it neither detected the studs, nor the electric wires. The Franklin 710 works just fine (doesn't have the live wire detector, but at least finds the studs reliably)
I don't own this stud finder but I use a Bosch 300' laser distance measure for work and it's the best one on the market (tried Milwaukee, Stanley, Chinese brands, etc). Surprised they dropped the ball on this, Bosch stuff is usually pretty high quality.

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