Bosch GMS 120-27 Professional Wall Scanner, Black, Blue

The Bosch GMS 120-27 Professional Wall Scanner is a battery-powered detector for checking concealed structures before drilling, fastening, or installation work. Its key capability is detecting non-magnetic metals such as copper at depths of up to 120 mm. The scanner is intended to identify possible obstructions without opening the surface first. It is suited to construction, renovation, electrical installation, and mounting preparation. Drywall and other building surfaces are supported as working areas.

At 290 g, the scanner stays manageable for repeated checks across walls, floors, and ceilings. Its black-and-blue housing carries an IP54 rating for protection against dust and splashing water. A built-in display reports detection results, accompanied by audible alerts. The integrated marking hole helps transfer a detected position directly onto the work surface. A carrying and storage case is supplied for transport between jobs.

• 100 mm maximum steel detection depth for locating ferrous metal behind surfaces.
• 50 mm maximum live-cable detection depth for checking areas before drilling or fastening.
• 30 mm maximum wood detection depth for locating concealed wooden studs.
• Two AA (LR6) batteries included for battery-powered operation.
• 186 × 86 × 33 mm body dimensions for handheld scanning and storage.