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Model#: BSHNGMS120

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Brand new items;Full manufacturer warranty available
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New or Recon items with possible minor cosmetic damage; CPO 60 day money back guarantee
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Bosch GMS120 Digital Wall Scanner

Model#: BSHNGMS120
(See Price in Cart)
In Stock
Ships Today


Bosch's GMS120 Digital Wall Scanner provides detection of multiple materials including wood, metal and live wiring. Because of its versatility and consistent performance, it's an ideal tool for construction, electricians, contractors, masons, plumbers and others who need reliable detection.
  • Multi-mode detection for wood studs, metal objects (rebar, studs and steel/copper pipes) and live wiring
  • Illuminated graphical LCD display indicates mode, detection strength and more
  • Deep metal detection capability detects steel up to 4-3/4 in. (120mm) deep in cured concrete
  • Automatic center finder for locating center of detected wood or metal object
  • Automatic calibration for easy and precise detection with 3 selection modes (wood, metal, AC wiring)
  • Audible detection signal with On/Off button
  • Ergonomic soft-grip for secure grip and comfort
  • Illuminated ring indicates detection status
  • Digital Wall Scanner - GMS120
  • Hand Strap
  • 9V Battery
  • Carrying Bag


Battery Type: Alkaline
Max. Detection Depth (Copper Wiring): 2 in.
Max. Detection Depth (Ferrous Metals): 4-3/4 in.
Max. Detection Depth (Non-Ferrous Metals): 3-1/8 in.
Max. Detection Depth (Wood): 1-1/2 in.
Operating Temperature (F): 14 - 122 Degrees
Voltage: 9V


  • Detection
  • Reviews

    Product Reviews


    by PowerReviews
    BoschDigital Wall Scanner

    (based on 43 reviews)


    of respondents would recommend this to a friend.


    • Accurate (20)
    • Lightweight (16)
    • Reliable (15)
    • Ergonomic (13)
    • Compact (7)


    • Difficult to use (3)
    • Inaccurate (3)

    Best Uses

    • At home (16)
    • Commercial (12)
    • Minor projects (12)
      • Reviewer Profile:
      • Avid do-it-yourselfer (12), Casual do-it-yourselfer (6), Professional (6)

    Reviewed by 43 customers

    Sort by

    Displaying reviews 6-10

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    Bosch GMS120 Multi Scanner

    By senorbob999

    from sacramento, ca

    Comments about Bosch Digital Wall Scanner:

    I bought this scanner about 2 months ago to help with assisting in finding live wires and copper pipes in the walls where I work. I'm a maintenancce technician and I do a lot of sheetrock repair and replacement. in the past I had to use a cheap little stanley wall scnanner that couldn't find a wall stud to save its life. I stumbled upon the bosch gms120 by accident online and read what it could do and decided to spend the extra money to try it out. I bought it online and when it arrived I put it to use asap. The stud finder is dead on accurate and the ability to find the center of the stud helps tremendously when cutting drywall and installing screws into the wall. The metal detection features are also very acurate in finding copper pipe and or rebar and the fact that it can distinguish between ferrous and non ferrous metals helps out a lot. The only issue I have with the scanner is the live wire detection. There has to be 120v+ power flowing through the wire to detect it and sometimes the scanner doesn't find the live wires. I've had the scanner right over live wires with 120v running through them and the scanner picked up a weak signal. Other than that this scanner works way better than I could ever imagine or expect. I highly recommened this scanner to any homeowner or professional out there. The cost is a little bit much but well worth is if you use it often. 


    My querry. Does GMS120 ...

    By Gaby

    from UK

    Comments about Bosch Digital Wall Scanner:

    My querry. Does GMS120 wall scanner detect plastic? The conduit water pipe in my house is plastic / UPVC. Thank you.


    Outstanding features


    from Haymarket, VA

    Comments about Bosch Digital Wall Scanner:

    Bought this for several reaons: 4.5 inch depth reading; auto center; locates rebars in concrete. Beats the top of the line stud finders I already have. Easy to use, even for my wife.


    Looks good, fails to deliver

    By missmagic

    from UK

    Comments about Bosch Digital Wall Scanner:

    I trust the Bosch name, and in part that was why I was prepared to pay so much for a cable detector. A decision I now regret. It may just be this unit, but the results are so erratic on cable detection to be totally useless, and potentially dangerous.


    Stud finder

    By JoeT

    from Ontario, CA

    Comments about Bosch Digital Wall Scanner:

    This is by far the best stud finder I've had. It actually works

    Displaying reviews 6-10

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    Questions & Answers

    Do you have questions about this product?

    Get answers from real customers and in-house experts with AnswerBox.

    3 Questions | 4 Answers
    Displaying questions 1-3
    • Digital Wall Scanner


      Was wondering if you ever sell this reconditioned wall scanner with the case
      Asked on 1/12/2015 by Mike from United States

      1 answer

      • Staff Reviewer


        Hi Mike,

        Unfortunately, with reconditioned tools, it's uncertain whether or not the cases would be included.

        Answered on 1/14/2015 by Ray from Atlanta
    • Digital Wall Scanner


      Can I determine if the studs are metal or wood behind drywall?
      Asked on 11/13/2013 by William from United States

      2 answers

      • A:

        Yes, this can tell you if the studs are metal or would. It also detects live wiring and plumbing.

        Answered on 11/14/2013 by Community Answer from None
      • Staff Reviewer


        This scanner can detect wood studs, metal objects (rebar, studs and steel/copper pipes) and live wiring. Also, the scanner can detect the type of material found.

        Answered on 11/13/2013 by Ken from Atlanta, GA
    • Digital Wall Scanner


      Do you ship to Australia ? And how much for the shipping cost ?


      Asked on 10/7/2013 by DL

      1 answer

      • Staff Reviewer


        Currently we do not ship to Australia.

        Answered on 10/8/2013 by Ken from Atlanta, GA
    Displaying questions 1-3

    Do you have a question about this product? 


    New Vs. Reconditioned

    What's the difference between New and Factory-Reconditioned?

    Factory-Reconditioned products have been returned to the manufacturer and are restored to like-new operating condition; they go through a rigorous testing and inspection process. Plus, they offer a significant savings vs. new.
    • Reconditioned products may have minor cosmetic blemishes or scratches that do not affect item performance.
    • Reconditioned products may not come with all of the consumables the new version comes with (bits, sanding pads/papers, cases, etc.).
    • Both come with a manufacturer warranty and are covered by our Money Back Guarantee; New is 30 days, Reconditioned is 60 days.
    Condition: New Factory Reconditioned
    Features: Same Same
    Specs: Same Same
    Includes: Digital Wall Scanner - GMS120,
    Hand Strap,
    9V Battery,
    Carrying Bag
    Digital Wall Scanner - GMS120-RT
    Availability: In Stock In Stock
    Warranty: 2 Year Limited 1 Year Limited