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Bosch

BOSCH GMS 120 Wall Scanner with Modes for Wood, Metal, and Live Wiring, Includes 9V Battery, Hand Strap, & Pouch

    • Based on 4,291 reviews
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Availability: Only 2 left in stock, order soon!
Fulfilled by Chrome Engineering
Arrives Mar 18 – Apr 8
Order within 22 hours and 20 minutes
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Style: 9V Battery


Features

  • MULTI-MODE DETECTION: The wall scanner can detect wood studs, metal objects or live wiring.
  • DETECTION STATUS: An illuminated ring indicates detection. Green indicates no object found, orange indicates object near and red indicates object found.
  • AUTOMATIC CENTER FINDER: The scanner has an automatic center finder for locating the center of detected wood or metal object.
  • ILLUMINATED GRAPHICAL DISPLAY: The display indicates mode, detection strength and more.
  • AUDIBLE DETECTION SIGNAL: The scanner has an audible detection signal that can be turned on and off.

Description

Bosch wall scanners find magnetic and non-magnetic metals, power cables, wooden substructures or even plastic pipes with maximum reliability and precision. The scanner has an illuminated ring to indicate detection status. Green indicates no object found, orange indicates object near and red indicates object found. The scanner is equipped with an audible detection signal that can be turned on and off. The scanner is designed with an ergonomic soft-grip for comfort. Bosch’s GMS120 digital multi- 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, carpenters, masons, plumbers, and others who need reliable detection. GMS120 Digital Multi-Scanner At a Glance: Three available modes: wood, metal, wiring Automatic calibration, automatic center finder Detect steel at up to 4-3/4-inches deep in concrete Illuminated display for mode, detection strength, and more Audible detection signal with an on/off button Bosch’s GMS120 digital multi-scanner has three detection modes and a bright LCD display (view larger.) Consistent Material Coverage With its three modes, Bosch’s GMS120 digital multi-scanner is an aid in most situations, as its modes cover wood studs, metal objects such as rebar, studs, and steel/copper pipes, and live wiring. It has precise automatic calibration that makes use easier and an automatic center finder, which pinpoints the center spot of the wood or material that has been detected. Deep Detection The GMS120 has a deep metal detection feature, which allows a user to detect steel that is placed up to 4-3/4-inches (120 mm) deep in cured concrete. It has a maximum detection depth of up to 2 inches for live wiring, up to 3-1/8 inches for copper, and up to 1-1/2 inches for wood studs. User-Friendly Features Bosch’s GMS120 digital multi-scanner provides an illuminated ring that indicates detection status and an audible detection signal with an on/off button. Adding to the user-focused design, its bright and readable illuminated graphical LCD display indicates mode, detection strength, and more, making it simple to check the detection device and switch modes and tasks. In addition, its ergonomic soft-grip provides a comfortable grip that’s secure and safe. Dimensions and Warranty The Bosch GMS120 digital multi-scanner measures 10-1/4 inches by 3 inches by 6-1/2 inches and weighs .6 pounds. It comes with a two-year warranty. What's in the Box One Bosch GMS120 digital multi-scanner, hand strap, one 9-volt battery, and carrying pouch. Bosch’s GMS120 digital multi-scanner detects multiple materials, has a user- friendly design, and easy detection status checking (click each to enlarge). P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); From the Manufacturer Bosch GMS 120 professional multi material cable detector, complete with protective bag. The most convenient multi-functional scanner for construction applications. Includes: hand strap, (1) 9-Volt battery and carrying case. See more

Media Type: No Media


Scanner Type: Wall


Brand: Bosch


Model Name: GMS120


Connectivity Technology: No Connectivity


Product Dimensions: 6.5"D x 10.25"W x 3"H


Resolution: 600


Item Weight: 0.5 Kilograms


Light Source Type: LED


Optical Sensor Technology: CMOS


Product Dimensions: 9.84 x 5.91 x 1.97 inches


Item Weight: 1.1 pounds


Item model number: GMS 120


Batteries: 1 9V batteries required. (included)


Is Discontinued By Manufacturer: No


Date First Available: April 5, 2011


Department: Electronics


Manufacturer: Bosch


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Mar 18 – Apr 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Good scanner, but fiddly
Style: 9V Battery
I bought this because of the great ratings and reviews here and elsewhere. But I found this tool very fiddly. It has problems with our walls and find electricity and studs where they are not. I have had much more better luck with a cheap stud finder. However, when this tool does read properly, it is very handy, because the target is perfect for centering a mark. Perhaps our walls just have some weird stuff behind them (and it wouldn’t surprise me after what we have seen. ... show more
Reviewed in the United States on December 15, 2024 by G. Wolff
    • Excelente producto
Style: 9V Battery
Excelente producto
Reviewed in the United States on February 9, 2025 by JUAN P.
    • Solid choice...but read the manual
Style: 9V Battery
I'm a fan of Bosch tools and the GMS120 is no exception. It is a step up from the old stud finder of two decades ago in terms of what it can do—though almost twice as large. It comes with a battery, which is nice, and a case, which is really useful. Perhaps the most impressive thing about it is that it comes with a multi-page owners manual that details a number of different techniques for increasing the accuracy of your reads. These are not obvious and increase the utility of the tool, which I found to be accurate. That said, I compared the GMS120 to the Zircon HD900c (available only at Home Depot from what I can tell) and ultimately decided to keep the Zircon unit. The Zircon offered slightly superior functionality but it was really ease-of-use that motivated my choice. One key feature difference is that the Zircon unit scans for studs in two different modes: normal and Deep Scan. The theory is that you don't necessarily want the scanner to find something deeper in the wall (pex, etc.) and have it misidentify it as a stud so the normal mode scans only to 3/4 of an inch. Deep Scan scans to 1.5 inches. The Deep Scan mode is useful with double layers of sheetrock or when you're looking for an empty cavity instead of a stud. The Bosch unit only has one stud finder mode that seems equivalent to Zircon's Deep Scan as it goes to 1.5 inches. The Zircon unit identifies what it is seeing by the color of the LCD backlight on its display as well as text or symbols on the display itself. I thought the colored backlight was a gimmick until I tried it. I found it very convenient. Bosch uses a colored LED surrounding a hole in the middle of the scanner to convey the same information but, for me, this didn't work nearly as well. As other reviewers have noted, the LED is so bright that you have to turn on the display's backlight to even read it. And the hole in which you are supposed to insert a marking instrument becomes pitch black, making it difficult to see what you are doing. The Zircon makes it much easier to make a precise mark, projecting a red arrow onto the surface where it believes the center of an underlying object to be. The bottom line is that I consider the GMS120 to be a good tool that can be quite useful. However, I do think that Zircon HD900c is a better choice at about the same price. ... show more
Reviewed in the United States on January 4, 2021 by tlinn-com
    • This easy-to-use stud/metal/wire finder is great
Style: 9V Battery
Review Image by Steve Steve
Review Image by Steve Steve
Review Image by Steve Steve
Review Image by Steve Steve
Review Image by Steve Steve
I use it for the thick drywall/plaster or wood floors in my house and works much better than the cheaper electronic ones I have used in the past. Most of my 1950s home's walls have drywall coated in plaster and are about 1" thick is most spots so non-electronic and electronic stud finders never worked too well. Remodeled areas of my home also have the standard 5/8" or 1/2" thick drywall and 3/4" thick wood paneling which I use this mostly successfully on. I also used this successfully to detect flood joists beneath wood flooring, copper and galvanized pipes behind cement board/tile and to find rebar in cement. It can detect steel as deep as 4.75" in the wall, wood up to 1.5" and wires up to 2". Using it around the house, I find it works better in the thick walls and wood paneling, especially for finding live wires. In the standard thickness drywalled walls, it does not find electrical wires well but it does find studs and plumbing well. The only downside to this detector is I cannot get it to consistently find electric wires behind 1/2" or 5/8" drywall which is standard on most homes. In most cases, it will not detect them at all but does give a reading sometimes. This is probably due to the finder only being able to detect wires up to 2" deep in the wall. Sometimes wires are not within 2" of the drywall surface. It also cannot detect studs well behind wood paneling which is not surprising. I find it pretty user-friendly, just turn it on, set your mode (wood, metal, electrical) then place it on the wall and give it a second to calibrate. Afterwards, start searching. It will alert you to whatever mode you have it set on with a bar gauge. When you have it on wood mode, it will also alert you to metal and wires which is convenient. It makes noises as you get closer (you can turn the sound off, it is a bit irritating). When you find the center of a stud, pipe or wire, the finder has a convenient holes you can stick a pencil through the mark it. It seems to find wood with the assistance of finding screws/nails and overall, I find its best to scan up and down to find the exact position of the stud, pipe or wire. You probably wont get the exact location on the first bullseye. The finder also has a backlight for the screen when using in dark areas. The finder comes with a 9v battery, carrying case and directions as well. The directions take a little reading. Overall, this is great for finding studs and pipes but 4/5 stars for the general inability to find electrical behind standard thickness drywall. 5 stars for versatility and ease of use. I thought about knocking it down a star for general failure to detect wiring but its scan range for wiring is limited as stated. ... show more
Reviewed in the United States on November 12, 2019 by Steve Steve

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