Internet #202850662

Model #GMS120

Digital Wall Scanner with Modes for Wood, Metal, and AC Wiring

  • Illuminated ring indicates detection status
  • Metal detection detects steel up to 4-3/4 in. deep in concrete
  • Detects studs, metal objects (rebar, metal pipes) and live wiring
  • See More Details

Frequently Bought Together

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Price:
$7900

Product Overview

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 nonferrous 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°F/-10°C-122°F/50°C
  • Great solution for all your detection needs

    StudSensor

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Info & Guides

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Price
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Ratings
(284)
(170)
(12)
(14)
Hand Tool TypeStud SensorStud SensorStud SensorStud Sensor
FeaturesElectronic,Hand-Held,No Additional FeaturesDigital,Electronic,LED DisplayElectronic,Hand-Held,No Additional FeaturesNo Additional Features
Battery Type Required9-volt9-volt9-volt9-volt
View ProductView ProductView ProductView Product

Specifications

Dimensions

Product Depth (in.)
10.25
Product Height (in.)
3
Product Width (in.)
6.5

Details

Audio alert
Yes
Batteries Included
Yes
Battery Type Required
9-volt
Detects metal
Yes
Detects voltage
Yes
Digital Display
Yes
Features
Digital,Electronic,LED Display
Hand Tool Type
Stud Sensor
Laser level included
No
Maximum wall thickness (in.)
4.75
Number of Batteries Required
1.0
Reconditioned
No
Returnable
180-Day
Tools Product Type
Hand Tool

Warranty / Certifications

Manufacturer Warranty
2 Year

Questions & Answers

23Questions36Answers

will it detect nails in lumber before sawing on table saw?

Asked by gcorp February 21, 2021
3
Answers

Thank you for your question. The GMS 120 Scanner finds magnetic and non-magnetic metals, power cables, wooden substructures or even plastic pipes with maximum reliability and precision. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from M-F 7a-7p CST.

Will this instrument detect a metal electrical junction box hidden beneath 1/2 in. sheet rock?

Asked by dale January 20, 2021
3
Answers

No, it can't

Will it detect through quarter inch porcelain tile

Asked by Mike March 13, 2020
3
Answers

Thank you for your question. The GMS120 Scanner is designed to detect wood studs, metal objects (rebar, studs and steel/copper pipes) or live wiring on a maximum depth of 4-3/4" for ferrous metal and 3-1/3" for non-ferrous metal. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.

will it find nails and studs under a plaster wall?

Asked by buck August 2, 2019
5
Answers

Yes, that is why I got this

Has anyone used this to scan for knob and tube wiring in an old house?

Asked by Sasha April 14, 2019
2
Answers

Thank you for your question. The GMS120 Scanner is designed to detect wood studs, metal objects (rebar, studs and steel/copper pipes) or live wiring on a maximum depth of 4-3/4" for ferrous metal and 3-1/3" for non-ferrous metal. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.

Can this locate main beams?

Asked by Dot123 September 22, 2018
5
Answers

Metal or wood, yes

Will this tool help me to find my platinum engagement ring in my house wall?

Asked by Neicey August 4, 2018
4
Answers

Yes.... but you will have nails and other things in the wall interfering so it will be tough. Look for it to signal a non-magnetic metal

Will Bosch GMS120 Wall Scanner detect studs at outside wall surface, such as vinyl siding ?

Asked by Anna July 10, 2018
3
Answers

Depending on the depth of what you are looking for, yes. It will find metal behind there generally

Can it be used to find nails for a wind mitigation Inspection? I’m a home inspector and I need it...

Asked by Joseph June 9, 2018
3
Answers

Yes

Will this tool find wood studs, wiring and pipes through 3/4" lathing /plaster walls?

Asked by RALPH January 29, 2018
5
Answers

Yes on all except electric wires which is struggles with. It will only find electric wires 2" deep or less. They can be deeper in the wall.

Digital Wall Scanner with Modes for Wood, Metal, and AC Wiring - page 2

Customer Reviews

  • 3.3
    out of 170 reviews
  • 57% recommend this product
5star-icon54
4star-icon34
3star-icon21
2star-icon16
1star-icon45
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Showing 1-10 of 170 reviews
I does work but i thought it was going to be the real deal. For the price. Unfortunately it doe...
I does work but i thought it was going to be the real deal. For the price. Unfortunately it doesn't but I will keep it because it its better than others
by Kingstone
Response from BoschToolsApr 21, 2020
"We appreciate you taking the time to write a review about the GMS120. Rest assured, we'll have all your comments about the item forwarded to our product team for an item review and future enhancements. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.
"
This easy-to-use stud/metal/wire finder is great for the thick drywall/plaster in my house and wo...
This easy-to-use stud/metal/wire finder is great for the thick drywall/plaster in my house and works much better than the cheaper electronic ones I have used in the past. At the end of this review is a link to a demonstration video I made. 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 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. Overview and demonstration: https://youtu.be/nlW0wfVhoVo
by SteveVA
2 people found this helpful
Works good for wood, not so much for electrical.
I had just remodeled my bathroom so I knew where all the studs and electrical was located. It worked great to find the studs. The display showed where the center was clearly. It even has a hole to mark on the wall. But I tried the electrical setting and it found the live wires sometimes and sometimes not. I even tried it over exposed wires and it didn't sound off. Overall, it worked great for wood, not so great for electrical. I didn't have an occasion to try it on steel setting.
by Jteach
3 people found this helpful
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.
by Trogo
29 people found this helpful
This is a costly, but not useful. Misses all electrical...
This is a costly, but not useful. Misses all electrical stuff. Can't distinguish between duct and stud. Will not recommend buying it
by ANSHUL
Response from BoschToolsFeb 22, 2021
We are sorry about the trouble that the GMS120 had caused you. For better output from the detector, some factors may need to be considered, such as the type and thickness of surface material. Its ability to detect wood studs is affected by inconsistency on the thickness of the surface material, such as plaster and lath. It is possible that there may be metal, wood or wiring or something else, such as plastic pipes, beneath the scanned surface that is not detected. Because of the uneven thickness of the plaster, it is difficult to detect wood studs using the wood detection mode and it cannot detect wood studs and joists through carpeting as well. It will probably be easier to locate the studs by changing to the metal-detection mode to locate the nails that hold the lath to the studs. If this continues to be an issue, kindly contact us at 1-877-BOSCH99 (1-877-267-2499) from M-F 7a-7p CST for further assistance regarding this matter. You may also return the scanner within 30 days from the purchased date. Thank you for your time.
Love it. It’s pretty accurate. Just what I needed....
Love it. It’s pretty accurate. Just what I needed.
by ANTONIO
Very accurate and easy to use...
Very accurate and easy to use
by KEVIN
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Response from BoschToolsFeb 1, 2021
Thank you so much for rating this product. Please let us know how we can better meet your expectations in the future. We look forward to hearing from you. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.
It will work on walls and floors; not much use on a roof.
It will work on walls and floors; not much use on a roof.
by musden49
Response from BoschToolsFeb 2, 2021
This GMS120 has Multi-mode detection for detection of wood studs, metal objects (rebar, studs and steel/copper pipes) or live wiring. It is wall scanner that has automatic calibration for easy and precise detection. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from Mon-Fri 7A-7P CST.
It's ok
I find it's a little unreliable with studs and is less sensitive than a cheaper one I have for detecting hidden live wire, but one must also understand how it works. They all have a temperament and you can do experiments to figure out how it works best before starting to rely on it. It is handy that it has so many features, like tracing copper pipe which isn't terrible. That all said, for what I do get out of it, I feel it could have been priced a little lower considering it performance. I'd pay a little more for more accuracy.
by Mukaround
Response from Bosch Customer SupportJan 19, 2021
We are sorry to hear about the issue you had with the GMS120 Digital Multi Scanner. Thank you for your review and feedback. This tool should find magnetic and non-magnetic metals, power cables, wooden substructures or even plastic pipes with maximum reliability and precision. We recommend you contact our Customer Support at 1-877-BOSCH99 (1-877-267-2499) from M-F 7a-7p CST to discuss and trouble shoot the issue and to provide possible options. You may also return he scanner to the store within 30 days from the purchase date.
Showing 1-10 of 170 reviews