Which materials can the Bosch GMS 120-27 detect?

The scanner detects ferrous metals, non-ferrous metals like copper pipes, live electrical wiring, and wooden studs in drywall.

What is the maximum detection depth of this wall scanner?

The maximum detection depth is 120 mm for non-ferrous metal, 100 mm for ferrous metal, 50 mm for live wiring, and 30 mm for wood.

How is the Bosch GMS 120-27 powered?

Thanks to Dual Power functionality, it operates using the included BA 3,7V 1,0Ah Li-ion battery or 2 standard AA batteries.

How do you mark the detected object on the wall?

The tool features a built-in marking hole at the center of the LED ring, allowing you to mark the exact spot directly on the wall with a pencil.

Is this scanner durable enough for tough jobsite conditions?

Yes, it features a shock-absorbing rubber housing and carries an IP54 rating for protection against dust and splashing water.

BOSCH GMS 120-27 detector wall scanner in storage case (BA 3.7V 1.0Ah battery + USB-C cable) - 0601081701

Name: BOSCH GMS 120-27 detector wall scanner in storage case (BA 3.7V 1.0Ah battery + USB-C cable) - 0601081701
Brand: BOSCH
SKU: 08108508
Price: 128.59 EUR
Availability: PreOrder

Supplier number: BOSCH 0601081701 | EAN 4053423255348

Recommended Retail Price €170.52

128.59 tax incl.

€106.28 excl. VAT (incl. all environmental contributions)

On order: delivered from 17/10/2026

✆ Talk to a specialist

How does it work?

Purchase a participating Bosch Professional MT Li-Ion measuring tool during the promotion period and receive the matching battery free of charge.
Upload your proof of purchase via the Bosch PRO360 app before 31 January 2027 to claim your free battery.
The promotion is valid from 01.09.2026 to 31.12.2026.
Bosch PRODEALS are recognisable by the promotion label on the product page. Click the label to view all participating items.

Bosch PRODEALS 2026 - Purchase a measuring tool and receive a free battery!

Confident and damage-free wall drilling

Practical benefits

Deep multi-material scanning: You reliably locate magnetic and non-magnetic metals, live cables, and wooden studs up to a depth of 120 mm.
Pinpoint center marking hole: The color-coded LED ring and dedicated center marking hole let you indicate detected objects directly on the wall surface.
Rugged Bosch jobsite durability: Built with a shock-absorbing rubber casing and IP54 dust and splash protection, your tool withstands demanding working environments.

In a nutshell

The right choise for

Eliminate the guesswork before drilling with the Bosch gms 120-27 wall scanner. This reliable detector scans up to a depth of 120 mm, pinpointing magnetic and non-magnetic metals, live wiring, and wooden substructures behind walls. With the color-coded led ring and the practical center marking hole, you can indicate detected objects directly and accurately onto the surface. Its shock-absorbing rubber casing and IP54 rating protect against dust and splashing water, making it dependable for demanding jobsite conditions. Whether hanging cabinets or fitting utilities, you work faster, safer, and with complete confidence.

Product information FAQ

€128.59

tax incl.

Key features according to our expert

Max. detection depth: 120 mm
Supplied in: Case

Scope of delivery

2 x 1.5 V LR6 battery (AA)
Storage case

Product description

Clear and simple: the intuitive wall scanner that makes the invisible visible

Provides confidence by detecting metal, live cables and wooden substructures
Easy to use with simple mode selection and marking hole
Built for a rugged working environment thanks to shock-absorbing rubber casing and IP54

All Features

Max. detection depth: 120 mm
Supplied in: Case
Length x width x height: 186 x 86 x 33 mm
Electrical power supply: 2 x 1.5 V LR6 (AA)|2 x 1.2 V HR6 (AA)|1 x BA 3.7V 1.0Ah Li-Ion battery
Detection depth, ferrous metal, max.: 100 mm
Additional function: Marking hole
Detection depth, wooden substructures, max.: 30 mm
Detection depth, current-carrying pipes, max.: 50 mm
Material identification: Ferrous metal|Non-ferrous metal|Current conductor|Non-metallic material
Detection depth, non-ferrous metal, max.: 120 mm
Dust and splash water protection: IP 54
Bosch radar technology: no

Brand BOSCH
08108508
EAN 4053423255348
Supplier number BOSCH 0601081701
Warranty Up to 5 years warranty on Bosch Professional and up to 3 years on Bosch DIY after successful registration!

Frequently asked questions about this product

Answered by specialists

Which materials can the Bosch GMS 120-27 detect?: The scanner detects ferrous metals, non-ferrous metals like copper pipes, live electrical wiring, and wooden studs in drywall.
What is the maximum detection depth of this wall scanner?: The maximum detection depth is 120 mm for non-ferrous metal, 100 mm for ferrous metal, 50 mm for live wiring, and 30 mm for wood.
How is the Bosch GMS 120-27 powered?: Thanks to Dual Power functionality, it operates using the included BA 3,7V 1,0Ah Li-ion battery or 2 standard AA batteries.
How do you mark the detected object on the wall?: The tool features a built-in marking hole at the center of the LED ring, allowing you to mark the exact spot directly on the wall with a pencil.
Is this scanner durable enough for tough jobsite conditions?: Yes, it features a shock-absorbing rubber housing and carries an IP54 rating for protection against dust and splashing water.