Bosch GMS 120 Wall Scanner Amaris Hardware Solutions
Bosch GMS 120 Wall Scanner - Image 2
Bosch GMS 120 Wall Scanner Amaris Hardware Solutions
Bosch GMS 120 Wall Scanner Amaris Hardware Solutions
Bosch GMS 120 Wall Scanner - Image 2
Bosch GMS 120 Wall Scanner Amaris Hardware Solutions
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Bosch GMS 120 Wall Scanner

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The Bosch GMS 120 Wall Scanner is the favourite multi-detector in its class, featuring automatic calibration for reliable and accurate detection of hidden objects in walls, floors, and ceilings . It detects magnetic metals (up to 120mm), non-magnetic metals (up to 80mm), live electrical cables (up to 50mm), and wooden studs in drywall (up to 38mm) . Key features include three selectable detection modes (Drywall, Metal, Live Cable), automatic Centre Finder for pinpoint object location, illuminated graphical display, three-colour LED ring indicating detection status, and audible detection signal . The robust tool features rubberised grip, shockproof housing, and IP54 dust and splash protection . Powered by a single 9V battery, it weighs approximately 0.27kg and includes a protective pouch and hand strap . Suitable for electricians, plumbers, carpenters, and general contractors.
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Description

Table of Contents

Bosch GMS 120 Wall Scanner

PRIMARY USES

Multi-Mode Detection for Safe Drilling
Primary Use: A multi-detector wall scanner used for locating metal objects, wooden studs, and live electrical cables in walls, floors, and ceilings before drilling or cutting. Essential for preventing accidents and damage during renovation, installation, and maintenance work.
How it helps: For electricians, plumbers, carpenters, and construction professionals, the multi-detector provides reliable detection of hidden objects in various wall types. The automatic calibration feature ensures precise measurement results and avoids application errors . The GMS 120 detects magnetic metals (e.g. steel, iron) up to 120mm deep, non-magnetic metals (e.g. copper pipes) up to 80mm, live electrical cables up to 50mm, and wooden substructures in drywall up to 38mm . The tool’s versatility makes it invaluable for both new construction and renovation projects .
Three Detection Modes for Specific Applications
Primary Use: Selectable detection modes for different material types: Drywall mode for locating wooden studs, Metal mode for ferrous and non-ferrous metals, and Live Cable mode for identifying electrical wiring .
How it helps: The three selection modes allow the user to optimise detection for specific materials, improving accuracy and reducing false readings . The audible detection signal with on/off button provides clear feedback during scanning . The illuminated graphical display indicates mode selection, detection strength, and other information for easy interpretation .
Centre Finder and Marking Function
Primary Use: Precisely locates the centre of detected objects for accurate marking and drilling.
How it helps: The automatic Centre Finder provides a pinpoint indication of the object’s centre, ensuring accurate drilling or cutting . The marking hole within the three-colour LED ring allows direct notation of each scanning result without moving the tool . The illuminated LED ring changes colour to indicate detection status: green means no object found, orange means object is near, and red means an object is within the detection area .
SECONDARY USES
Cabinet and Kitchen Installation: Locates studs and hidden pipes before drilling for cabinet, counter, and shelving installation.
Pipe and Electrical Work: Identifies pipes and cables in walls before drilling or cutting for plumbing, heating, and electrical systems.
Window and Door Framing: Finds wooden and metal studs for secure fixing of frames and fixtures.
Heating and Air Conditioning Installation: Locates hidden obstacles when installing heating systems, radiators, boilers, and A/C units.
Remodelling and Renovation: Ensures safe drilling into walls during renovation projects by identifying hidden hazards.
About brand
**Bosch** is a leading German brand founded in **1886**, renowned for its high-quality, innovative, and reliable engineering solutions. In the hardware industry, Bosch is best known for its durable power tools, measuring equipment, and accessories, trusted by professionals and DIY users worldwide. With a strong focus on performance, precision, and innovation, Bosch continues to set the standard for quality in construction, manufacturing, and home improvement.
KEY PRODUCT FEATURES

1. BASIC IDENTIFICATION ATTRIBUTES

  • Device Type: Material detector/wall scanner; not a medical device.
  • Designation: Bosch GMS 120 Professional
  • Order Number: 0 601 081 000 
  • Detectable Objects: Magnetic metals (e.g. steel, iron), non-magnetic metals (e.g. copper), live electrical cables, wooden substructures 
  • Material Identification: Material properties display including material group, metallic/live wire identification, and drilling depth recommendation 
  • Country of Origin: China or India (varies by production batch) 

2. TECHNICAL & PERFORMANCE PROPERTIES

  • Primary Action: Multi-mode scanning for hidden objects using electromagnetic detection technology.
  • Max Detection Depth: 120mm (magnetic metals) 
  • Detection Depth (Magnetic Metal): Up to 120mm 
  • Detection Depth (Non-Magnetic Metal): Up to 80mm (3.1") 
  • Detection Depth (Live Cables): Up to 50mm (2") 
  • Detection Depth (Wooden Substructures): Up to 38mm (1.5") 
  • Protection: IP54 dust-protected and splash-proof 
  • Power Supply: 1 x 9V 6LR61 block battery 
  • Automatic Deactivation: Approx. 5 minutes 
  • Battery Life: Approx. 360 minutes (6 hours) 
  • Operating Temperature: -10°C to +50°C (14°F to 122°F) 
  • Dimensions: 200mm x 85mm x 32mm (7.75" x 3.75" x 1.4") 
  • Weight: Approx. 0.27kg (1.7 lb) 

3. PHYSICAL & OPERATIONAL PROPERTIES

  • Preparation: Insert 9V battery. Press power button. Select detection mode (Drywall, Metal, or Live Cable). The tool calibrates automatically.
  • Usage Instructions: Move the tool slowly across the wall surface following the direction arrows. The illuminated LED ring changes colour from green to orange to red as the tool approaches an object. The Centre Finder scale indicates the exact centre of the detected object. Use the marking hole to mark positions directly.
  • Display: Illuminated graphical display showing mode, detection strength, and material properties 
  • Detection Modes: Three modes - Drywall (wood substructures), Metal (all metals), Live Cable 
  • LED Ring: Three-colour ring (green/orange/red) for instant detection feedback 
  • Centre Finder: Pinpoint indication of object centre 
  • Audible Signal: Sound indicator with on/off button 
  • Marking Hole: Direct annotation through hole within LED ring 
  • Storage Conditions: Store in a dry, secure place.
  • Cleaning: Clean housing with soft, dry cloth.

4. SAFETY & COMPLIANCE ATTRIBUTES

  • Safety Classification: Electronic measuring device; no laser hazard. No special safety precautions required beyond normal use.
  • Environmental Protection: IP54 protection against dust ingress and water splashes 
  • Shock Protection: Rubberised housing and shockproof construction for durability on job sites 
  • Regulatory: Complies with relevant CE and UKCA standards.
  • Battery Safety: Use only recommended battery type (9V 6LR61). Do not short-circuit or dispose of in fire.

5. STORAGE & HANDLING ATTRIBUTES

  • Storage: Store in a dry, secure place. Remove battery if storing for extended periods.
  • Inspection: Regularly inspect tool for damage. Check functionality before use.
  • Usage: For best results, move the tool slowly and steadily. Avoid rapid movement. Hold the tool flat against the wall surface.
  • Transport: Use supplied protective pouch for storage and transport.
SAFETY HANDLING PRECAUTIONS

1. SAFETY PRECAUTIONS

Mechanical Safety: No special safety precautions required. Handle with normal care.
Battery Safety: Use only recommended 9V 6LR61 batteries. Do not mix old and new batteries. Remove batteries if device will not be used for long periods.
Operational Safety: This is a measuring tool, not a power tool. Contains no moving parts or cutting elements. Use with reasonable care to avoid dropping.
Maintenance: Clean with a soft, dry cloth. Do not use aggressive cleaning agents. Have repairs performed only by authorised service centres.
Training requirement: Basic instruction on selecting correct detection mode and interpreting the display is recommended. Supervisors should ensure operators understand the tool's detection capabilities and limitations.

2. FIRST AID MEASURES

Eye Exposure: Not applicable for normal use.
Skin Contact: Not applicable for normal use.
Battery Leakage: Avoid skin contact with battery acid. Wash affected area with soap and water. Seek medical attention if irritation occurs. If acid enters eyes, rinse with plenty of clean water for at least 15 minutes and seek immediate medical attention.
Inhalation: Not applicable for normal use.
Ingestion: Not applicable for normal use.

3. FIRE FIGHTING MEASURES

Flammability: The tool is predominantly plastic and electronics, which are flammable. Batteries may leak or rupture if exposed to high temperatures.
Extinguishing Media: Use water spray, foam, dry chemical powder, or carbon dioxide (CO₂) for fires involving tools.
Fire Response: In event of fire, evacuate the area and call emergency services. Use appropriate extinguishers. Do not inhale fumes from burning batteries or plastics.

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