Bosch Professional 601081000 Stud Finder GMS 120 (Max. Detection Depth Wood/Magnetic Metal/Non-Magnetic Metal/Live Cable: 38/120/80/50 mm, in Cardboard Box) , Black/Blue [Energy Class A]
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Metal Setting
The standard detection setting, the metal setting provides the best detection for magnetic (≤12cm) and non-magnetic (≤8cm) metals and can detect live wires up to a depth of 5cm on various wall types.
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Live Wire Setting
While all settings detect live wires, the Live Wire setting provides best results when detecting live wires is the focus and can accurately detect them up to a depth of 5cm on various wall types.
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Drywall Setting
Specialized for use with drywall, and can detect wooden and metal studs ≤ 3.8cm deep and live wires up to a depth of 5cm. This settings should only be used if the detection of wooden studs is needed.
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Apply Voltage
Make sure voltage is applied to the cable being searched for (i.e. by turning on the light)
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Remove Interferences
Remove jewelry and gloves. Turn off nearby electronic devices that could interfere with detection
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Choose a Setting
Turn on the device and select the correct detection setting for the application
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Start Detection
Hold the tool by the rubber grip. Place the tool flat against the wall. Move 3x in each direction
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Record Results
Transfer detection results to the wall by using the marking hole
Product Comparison
 GMS 120 |  D-tect 120 |  D-tect 150 SV |  D-tect 200 C | |
| Max. detection depth | 120mm | 120mm | 150mm | 200mm |
| Metal | ✔ | ✔ | ✔ | ✔ |
| Live wires | ✔ | ✔ | ✔ | ✔ |
| Non-live cables | ✘ | ✔ | ✔ | ✔ |
| Plastic Pipes | ✘ | ✔ | ✔ | ✔ |
| Wood | ✔ | ✔ | ✔ | ✔ |
| Material classification | Live-wire/Metal | Live-wire | Live-wire/Metal | Live-wire/Metal |
| Bosch Radar Technology | ✘ | ✔ | ✔ | ✔ |
| Spot measurement | ✘ | ✔ | ✘ | ✔ |
| Depth indication | ✘ | ✘ | ✔ | ✔ |
| Display max. drilling depth | ✘ | ✘ | ✘ | ✔ |
| Display object depth | ✘ | ✘ | ✔ | ✔ |
Why does the signal change when I move along a live wire?
Twisting of leads of live wires causes variation in the strength of an electric field on the surface up to complete extinction. In case of a 3-phase live wire, the different phases of live leads cancel each other out.
Why do I have problems detecting a wooden stud in drywall?
Make sure to measure on homogenous drywall (e.g. no hidden holes or OSB walls). Choose the drywall setting before positioning the device on the wall, then wait until the LED ring turns on and start moving the device 3x over the area of interest.
Why does the device indicate live wires everywhere?
The device detects live wires by capturing the signal emitted by the live wire. If a wall has a high conductivity, this signal can be spread and over whole wall. Or, if a live wire runs parallel to rebar, all rebar might be shown as live wires.
What should I do if the device displays different results for the same measurement?
Follow the step-by-step guide when using the tool and make sure to do all the measurements the same way. In particular, move the tool 3x in each direction and keep the outer conditions constant.
Why does the device indicate metal objects on the whole wall?
The tool detects aluminium foil on underfloor heating systems and on thermal glass wool insulation as metal, and likewise detects brick reinforced w/steel fibre as metal due to the high iron content. It may show a yellow light w/red bricks or tiles.
| Weight: | 270 g |
| Dimensions: | 19.68 x 3.5 x 9.52 cm; 270 Grams |
| Model: | 601081000 |
| Part: | 0601081000 |
| Colour: | Black/Blue |
| Pack Quantity: | 1 |
| Batteries Required: | Yes |
| Batteries Included: | Alkaline |
| Manufacture: | Bosch Professional |
| Colour: | Black/Blue |
| Quantity: | 1 |
Wish I bought one when they came on sale a few years ago
My new toy is really great light easy to use and saves a whole lot of time no more knocking on studs walls it’s easy now slide the detector across the wall to find your studs even has o hole in it so you can mark the Center well worth getting
Works well.
Read a lot of negative reviews before making the decision to get this. I read some reviews on another site and found that it was mainly user error that may have led to the bad reviews.
I find that you need to ignore the audio sensor and go by the meter guage in the display.
Well made, comes with a case and battery. Expensive compared to other brands, but definitely get what you pay for.
Not bad at all
There’s some negative reviews regarding this, its takes some getting used to but its accurate if you follow the instructions and watch the video online.
It's accuracy is quite good. I know its limitations, mainly user error. How to stop false readings.
Initially, I thought what a pile of junk, it seemed wildly inaccurate on electrical cables, but after watching a few videos on you tube, and reading the manual, yes reading the manual. I could identify cables, beams and what ever I needed correctly.
When I first started to use it, lots of false readings, but now I know its limitations, mainly user error. I like it much more. once you realize how to stop false readings, it’s accuracy is quite good.
This appears to be a easy bit of kit to use, but don’t be fooled. It take time to learn, requires reading the manual, and watching a few YouTube videos, to educate yourself on how to get the best from it. Mine is good now.
Useful tool
Good tool used for locating gas pipe into property when installing electrical cable through wall.
Accurately locates cables in stud walls.
Works really well
Works really well and user friendly. Best I’ve used so fa
A must buy
I read a lot of reviews before buying and I’m glad I didn’t focus on the negative ones too much. This is a great tool to give safe and accurate information. I’m not a regular DIY-ER but this was easy yo use and well worth the price for the reassurance that I wasn’t drilling into cables etc.
No more worrying……
Always worried what was behind the wall when drilling. We had a joined who drilled and flooded our kitchen years ago. He should had one these!
Great piece of ki