The Bosch PRO GMS 120‑27 Detector is a wall and floor scanner that tells you what’s hiding behind plaster, drywall or concrete so you can keep your drill bit in one piece — and your wiring intact — before you ever put the first hole in.

With its multi‑mode detection you’re looking for wood studs, live electrical wiring, or metal objects like rebar or pipes — this thing sees them all, giving you a clear picture of what’s where beneath the surface.

Key Features:

• Multi‑Mode Detection - Lets you pick between wood, metal and live wiring so you’re not guessing what you’ve found.
• Illuminated Display & Ring - Gives a quick visual cue when something’s detected — green to clear, orange to near, red to hit.
• Automatic Centre Finder - Pinpoints the centre of what’s been detected so you know exactly where to drill.
• Ergonomic Soft Grip - Sit in your hand comfortably and won’t slip when you’re manoeuvring on a lumpy surface.
• Audible Signal - Lets you hear what’s happening when you’re focused on a line or corner.

Applications

This Bosch wall scanner is perfect for any job where you’ve got to drill or fasten into a finished surface and need to avoid unseen hazards — from hanging cabinets or shelving to routing new cables, installing HVAC components or just not busting through a pipe mid‑drill.

Why Choose This Model

Here’s the thing — not all detectors give you the visual and audible clues this one does. The GMS 120‑27 Professional has clear feedback, automatic calibration and a centre finder that cuts down on guesswork, so you spend far less time second‑guessing and more time moving to the next task.

Technical Specifications Explained

• Maximum Detection Depth (120 mm) - You can find metal and objects up to about 12 cm deep, so even objects in solid walls don’t surprise you.
• Magnetic Metal Detection Range - Lets you spot iron and other ferrous metals before you hit them.
• Non‑Magnetic Metal Detection - Finds copper and other non‑ferrous metals to keep pipes and cables visible.
• Live Cable Detection - Alerts you to energized wiring up to several centimetres deep so you don’t nick a line.
• Wood Stud Detection - Helps locate wood framing so your fixings bite into something solid.

Who Should Buy This

If you’re a pro tradesperson or serious DIYer who drills into walls regularly, this multi‑material detector saves you from costly mistakes and keeps the job site safer — no more blind drilling or damaged services.

It’s also a great pick for renovators who want to avoid hidden hazards when updating kitchens, bathrooms or living spaces without calling in a specialist every time.