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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 4,442 reviews
Condition: Used - Very Good
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Availability: Only 2 left in stock, order soon!
Fulfilled by US Seller/We ship from USA
Arrives Oct 17 – Nov 3
Order within 15 hours and 47 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

Brand: Bosch


Color: Blue


Batteries Required?: Yes


Material: Metal


Power Source: Battery Powered


Brand: Bosch


Color: Blue


Batteries Required?: Yes


Material: Metal


Power Source: Battery Powered


Item Weight: 0.5 Kilograms


Recommended Uses For Product: Construction Site Scanning, Home Inspection


Manufacturer: Bosch


UPC: 000346423228


Global Trade Identification Number: 28


Product Dimensions: 9.84 x 5.91 x 1.97 inches


Item Weight: 1.1 pounds


Item model number: GMS120


Batteries: 1 9V batteries required. (included)


Is Discontinued By Manufacturer: No


Date First Available: April 5, 2011


Department: Electronics


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 17 – Nov 3

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

    • 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
    • Reliable and Accurate—Finally a Stud Finder That Works
Style: Industrial
I’ve tried a few budget stud finders in the $20–40 range, and most were unreliable—one didn’t work at all. This one, however, is flawless. It comes with 2 AA batteries, so it’s ready to go right out of the box. It immediately located studs with an audible tone, and also detects wires and metal. I especially love the built-in marking hole in the center—it makes it easy to pencil your spot without guessing. Excellent tool and well worth the price. ... show more
Reviewed in the United States on August 1, 2025 by IanGa
    • Works on plasterd walls!
Style: Industrial
This is the only stud finder that has worked with our plastered walls. So grateful to have it.
Reviewed in the United States on September 1, 2025 by Laurie
    • 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
    • Bosch Really disappointed me!
Style: 9V Battery
Wow! I pity the poor fool trying to make a living using this thing. I own 3 other stud finders and decided to go for, what I perceived to be, the best. I have purchased plenty of fine Bosch tools so I arrived at the conclusion that all of the individuals rating this stud finder so low just didn't know how to use it. Later I would reveal to myself that this was indeed a pompous conclusion. Then I bought one. My background is in Electrical Engineering so I do know a thing or two about how these devices work. I decided to put the Bosch Scanner to the test. First, I scanned a section of wall with three studs on 16 inch centers sheeted with standard 1/2 inch dry wall. This was a relatively simple task as the bays were clear of any pipes, wire or insulation. I used a $15 Zircon, a $25 Zircon and a $20 Stanley to map the area. As expected, all three found the studs accurately. I had been using these 3 units for years and trusted all for this type of scan. I marked the studs on a strip of painters tape about 6 feet long to document the results. Then I attempted to settle the Bosch unit down and let it self calibrate over a known empty bay. The Green Ring lit up and I thought this is sweet! That was it for the excitement. As I moved the unit across the tape the blasted thing beeped and showed center about every 3-4 inches. I tried everything above and below the tape marked with the other stud finder's results. Other Notes: The readability of the LCD display is ridiculous! This one had to be held about 20 degrees above eye level to see anything. Ah, but I thought, If I turn it upside down I will not have to squat to get readings below neck high. I could see it alright, but it was still incorrect and really cumbersome to use upside down. I cannot imagine how Bosch let this thing get on the market. Maybe this was a LEMON but if it was: There are most assuredly too many lemons produced with this model. By the way, the electrical wire sensor never did work even with a loaded circuit of 100 Watts. The metal finder did find the drywall nails, but so can my $1.25 swivel magnet nail finder. I have no embedded ferrous or nonferrous metal pipes in my walls, so to be fair; I could not test this function. ... show more
Reviewed in the United States on May 1, 2012 by Charlavecchio

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