Bosch Digital Wall Scanner-GMS120 at The Home Depot
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Model # GMS120

Internet # 202850662

Store SKU # 235338

Digital Wall Scanner

Bosch Digital Wall Scanner

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

$79.00 / each
$50 Off Select Bosch Power Tools, Accessories, and Measuring Tools Orders of $200 or more
Promotion Details
Price Valid : 10/17/2014 - 11/01/2014
$50 Off Select Bosch Power Tools, Accessories, and Measuring Tools Orders of $200 or more

$50 Off Select Bosch Power Tools, Accessories, and Measuring Tools Orders of $200 or more (Valid 10/17-10/31)
Item cannot be shipped to the following state(s): AK,GU,HI,PR,VI


Model # GMS120

Internet # 202850662

Store SKU # 235338

The New Bosch GMS120 Wall Scanner features 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. (120 mm) deep in cured concrete. Automatic Center Finder - For locating center of detected wood or metal object. 3 Selection Modes (Wood, Metal, AC Wiring) with automatic calibration for easy and precise detection. Audible Detection Signal - With On/Off button. Ergonomic Soft-Grip - For secure grip and comfort. Illuminated ring indicates detection status.

  • Max detection depth copper wiring: up to 2 in.
  • Max detection depth ferrous metals (steel): up to 4-3/4 in.
  • Max detection depth non ferrous metals (copper): up to 3-1/8 in. / 80 mm
  • Max detection depth wood substructures (studs): up to 1-1/2 in.
  • Operating temperature: 14-degree F / -10-degree C – 122-degree F / 50-degree C
  • Great solution for all your detection needs


Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Assembled Depth (in.)  10.25 in  Assembled Height (in.)  3 in 
Assembled Width (in.)  6.5 in  Audio alert  Yes 
Batteries Included  Yes  Battery Type Required  9V 
Detects metal  Yes  Detects voltage  Yes 
Digital Display  Yes  Hand Tool Type  Stud Sensor 
Laser level included  No  Manufacturer Warranty  2 Year 
Maximum wall thickness (in.)  4.75  Number of Batteries Required  1.0 
Reconditioned  No  Returnable  90-Day 


Rated 3.7 out of 5 by 46 reviewers.
Rated 4 out of 5 by Quality Wall Scanner I was frustrated buying cheap, throw-away stud finders that never seem to work when you need one, so I stepped up to the Bosch GMS120 Professional Wall Scanner. It comes with a nice flexible storage case with hand lanyard and belt loop. Using this wall scanner is not intuitive and requires reading the instructions thoroughly. There are multi-colored flashing lights, changing bar graphs, symbols and sounds that requires prior working knowledge to use properly. The instruction pamphlet would benefit from better graphics and illustrations. The scanner has three modes; wood, metal or live electrical. In the wood mode it actually scans for all three, and will display the various signals and graphs on the display. It also identifies the center point of wood studs or metal objects. Selecting metal mode excludes wood and scans for only ferrous/non ferrous metals and “live” electrical wires. It is important to note that the scanner detects wires where current is flowing. The warning light may not flash for wires that have no current draw. The Bosch GMS120 performed very well in all three modes during my testing and use. As recommended in the instructions, I used a thin piece of cardboard over the uneven ceiling texture, and it detected the joists perfectly. Now I don’t have to drill and patch holes in the ceiling when looking for the joists. The scanner could be more user friendly with better graphics in the display, but it’s still a giant leap above the cheap stud finders. April 25, 2013
Rated 4 out of 5 by Very nice to use This unit lets me know what is behind the wall for the most part. I gave it a 4 star as it gave me very error readings on a drywalled home where I could not figure out what was behind the existing wall. This could have more to do with what was behind the wall rather than the unit. This unit will work with plaster but follow directions! August 27, 2014
Rated 5 out of 5 by Short learning curve I have several "stud finders" that I have accumulated over time. None of them ever really exuded confidence to me that they were accurately detecting stud location. Forget confidence that I was actually driving a screw or nail close to the center of the stud. This new Bosch GMS120 eliminates the guesswork. In one situation I had the drywall open in a couple spots so was able to really see the accuracy of the center finder. It also quickly reports the presence of metal and electrical cables. I'm not an operators manual reader so I also liked the ease of use and quick learning curve of this device also. July 10, 2014
Rated 1 out of 5 by I got a bad unit... My unit wouldn't pick up anything correctly, wood, metal or electrical. It gave out false readings constantly and led to much aggravation. After some online research I discovered that Bosch sent some faulty units to the states. I called Bosch and they confirmed the bad units being shipped over to the U.S. I attempted to return it to the Home Depot store where I bought it only I had lost the receipt and the store had pulled the stud finder from their shelves so they refused to take it back. Now I am stuck with an $80 paper weight. I will purchase a new one because I trust Bosch products but I will not buy it from Home Depot. August 27, 2014
Rated 5 out of 5 by This is the best tool for finding studs, pipes and electrical wires. I used the Bosh Digital Wall Scanner to locate the studs in my stairway. I located the studs without any problems, and the I installed an additional stair rail. It was a no brainier with this product. I'm not a carpenter just a do it yourself er. October 7, 2014
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