Bosch GMS120-27 Professional Wall Scanner – Multi-Function Stud Finder & Live Wire Detector

Overview

The Bosch GMS120-27 is a professional-grade wall scanner designed for electricians, plumbers, and contractors who work behind drywall. It speeds up decisions on what lies beneath the surface while reducing guesswork on cuts, penetrations, and installations. The device provides quick, clear feedback to help you plan with confidence on busy job sites.

Advanced multi-material detection lets you identify wood studs, metal framing, copper pipes, and live electrical wiring with a clear center indication. The intuitive visual feedback helps you locate what matters most and transfer detection results quickly to your project plan.

Key capabilities

• PRO-GRADE MULTI-FUNCTION DETECTION: Not a simple stud finder—this professional wall scanner locates wood studs, metal framing, copper pipes, and live electrical wiring behind drywall, helping you plan safely.
• ABSOLUTE PRECISION & CONFIDENCE: Clear center indication and a color-coded ring; green means safe, red indicates live wire detected.
• BUILT FOR THE PROFESSIONAL JOBSITE: IP54-rated durability and a shock-absorbing rubber shell resist dust, water splashes, and daily wear on site.
• DUAL POWER FOR ZERO DOWNTIME: Use the included AA batteries for immediate power or attach a Bosch 3.7V Li-Ion battery for longer use (battery sold separately).
• ULTIMATE TOOL FOR PROS: A reliable, multi-material detector that supports electricians, plumbers, remodelers, and installers in making safer, more efficient decisions.

What’s included

• 1 x GMS120-27 Wall Scanner
• 2 x AA Batteries
• 1 x Protective soft pouch

Durability and warranty

IP54 dustproof and water-resistant body with a shock-absorbing rubber housing. Bosch Professional Warranty: one-year limited warranty, with an additional year when you register within eight weeks of purchase. Details on the Bosch site.