---
product_id: 652265967
title: "BOSCH GMS120-27 Professional Wall Scanner, Multi-Function Stud Finder, and Live Wire Detector for Electricians, Plumbers & Contractors"
brand: "bosch"
price: "45.75 OMR"
currency: OMR
in_stock: true
reviews_count: 8
category: "Bosch"
url: https://www.desertcart.com.om/products/652265967-bosch-gms120-27-professional-wall-scanner-multi-function-stud-finder
store_origin: OM
region: Oman
---

# Live AC wire detection up to 2" deep Detects wood studs up to 1.5" deep Locates metal framing & pipes up to 4.75" deep BOSCH GMS120-27 Professional Wall Scanner, Multi-Function Stud Finder, and Live Wire Detector for Electricians, Plumbers & Contractors

**Brand:** bosch
**Price:** 45.75 OMR
**Availability:** ✅ In Stock

## Summary

> 🔍 Scan Smarter, Build Better — The Pro’s Wall Scanner You Can’t Afford to Miss!

## Quick Answers

- **What is this?** BOSCH GMS120-27 Professional Wall Scanner, Multi-Function Stud Finder, and Live Wire Detector for Electricians, Plumbers & Contractors by bosch
- **How much does it cost?** 45.75 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/652265967-bosch-gms120-27-professional-wall-scanner-multi-function-stud-finder)

## Best For

- bosch enthusiasts

## Why This Product

- Trusted bosch brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Mark with Confidence:** Integrated pencil hole lets you mark exact stud centers quickly and cleanly.
- • **Dual Power Flexibility:** Use included AA batteries or upgrade to Bosch Li-Ion for nonstop workflow.
- • **Intuitive Color-Coded Display:** Green means safe, red means live wire—no second guessing on site.
- • **Pro-Grade Multi-Material Detection:** Pinpoint wood, metal, pipes & live wires with unmatched precision.
- • **Rugged IP54 Dust & Water Resistance:** Built tough for daily jobsite abuse, rain or dust won’t slow you down.

## Overview

The Bosch GMS120-27 is a professional-grade wall scanner designed for electricians, plumbers, and contractors. It accurately detects wood studs up to 1.5", metal framing and pipes up to 4.75", and live AC electrical wiring up to 2" behind drywall. Featuring an intuitive color-coded display, rugged IP54-rated dust and water resistance, and dual power options (AA batteries included or Bosch Li-Ion sold separately), this tool delivers reliable, precise detection on any jobsite. Its built-in marking hole and shock-absorbing casing make it a durable, user-friendly essential for professionals demanding accuracy and efficiency.

## Description

The Bosch GMS120-27 Wall Scanner provides quick, easy, and accurate detection of wood and steel studs, metals, and live wires behind drywall. Power flexibility helps keep the scanner up and running on the job with the option to use with the included two AA Batteries or 3.7V Li-Ion battery (sold separately). Get clear, confident results with the intuitive user interface that displays object center indication and material identification. Easy to use, the device glides smoothly across the wall and the color-coded illuminated marking ring makes fast, accurate work of transferring detection results. IP54 rating and shock-absorbing rubber casing help provide added durability on tough jobsites.

Review: This easy-to-use stud/metal/wire finder is great - I use it for the thick drywall/plaster or wood floors in my house and works much better than the cheaper electronic ones I have used in the past. Most of my 1950s home's walls have drywall coated in plaster and are about 1" thick is most spots so non-electronic and electronic stud finders never worked too well. Remodeled areas of my home also have the standard 5/8" or 1/2" thick drywall and 3/4" thick wood paneling which I use this mostly successfully on. I also used this successfully to detect flood joists beneath wood flooring, copper and galvanized pipes behind cement board/tile and to find rebar in cement. It can detect steel as deep as 4.75" in the wall, wood up to 1.5" and wires up to 2". Using it around the house, I find it works better in the thick walls and wood paneling, especially for finding live wires. In the standard thickness drywalled walls, it does not find electrical wires well but it does find studs and plumbing well. The only downside to this detector is I cannot get it to consistently find electric wires behind 1/2" or 5/8" drywall which is standard on most homes. In most cases, it will not detect them at all but does give a reading sometimes. This is probably due to the finder only being able to detect wires up to 2" deep in the wall. Sometimes wires are not within 2" of the drywall surface. It also cannot detect studs well behind wood paneling which is not surprising. I find it pretty user-friendly, just turn it on, set your mode (wood, metal, electrical) then place it on the wall and give it a second to calibrate. Afterwards, start searching. It will alert you to whatever mode you have it set on with a bar gauge. When you have it on wood mode, it will also alert you to metal and wires which is convenient. It makes noises as you get closer (you can turn the sound off, it is a bit irritating). When you find the center of a stud, pipe or wire, the finder has a convenient holes you can stick a pencil through the mark it. It seems to find wood with the assistance of finding screws/nails and overall, I find its best to scan up and down to find the exact position of the stud, pipe or wire. You probably wont get the exact location on the first bullseye. The finder also has a backlight for the screen when using in dark areas. The finder comes with a 9v battery, carrying case and directions as well. The directions take a little reading. Overall, this is great for finding studs and pipes but 4/5 stars for the general inability to find electrical behind standard thickness drywall. 5 stars for versatility and ease of use. I thought about knocking it down a star for general failure to detect wiring but its scan range for wiring is limited as stated.
Review: Reliable and Accurate—Finally a Stud Finder That Works - I’ve tried a few budget stud finders in the $20–40 range, and most were unreliable—one didn’t work at all. This one, however, is flawless. It comes with 2 AA batteries, so it’s ready to go right out of the box. It immediately located studs with an audible tone, and also detects wires and metal. I especially love the built-in marking hole in the center—it makes it easy to pencil your spot without guessing. Excellent tool and well worth the price.

## Features

- PRO-GRADE MULTI-FUNCTION DETECTION: Stop guessing, start knowing. This is not a simple stud finder; it is a professional-grade wall scanner that accurately locates wood studs, metal framing, copper pipes, and live AC electrical wiring behind drywall, saving you from costly mistakes.
- ABSOLUTE PRECISION & CONFIDENCE: Find the exact center of the stud every time. The easy-to-read graphical display and color-coded marking ring provide clear, confident feedback, turning green for "safe" and red for "live wire detected." No more second-guessing.
- BUILT FOR THE PROFESSIONAL JOBSITE: Cheaper tools fail; this one works. With an IP54-rated dustproof and water-resistant body and a shock-absorbing rubber casing, this wall scanner is built to withstand the daily abuse of a construction site, garage, or workshop.
- DUAL POWER FOR ZERO DOWNTIME: Never let a dead battery stop your workflow. This scanner offers true power flexibility, running on the included AA batteries for immediate use or on a Bosch 3.7V Li-Ion battery (sold separately) for extended, rechargeable performance, a must-have for any pro.
- THE ULTIMATE SCANNER FOR PROS: Justifying its premium price, this tool provides the reliability and multi-material detection that electricians, plumbers, remodelers, and installers demand. It's an investment in accuracy, safety, and efficiency that pays for itself.
- ESCANER DE PARED PROFESIONAL: El detector de vigas y metales definitivo para el profesional. Encuentra madera, metal y cables eléctricos con corriente con precisión y confianza. La herramienta esencial para electricistas, plomeros y contratistas.
- WHAT'S INCLUDED: Your kit contains (1) GMS120-27 Wall Scanner, (2) AA Batteries for immediate power, and (1) protective soft pouch.
- BOSCH PROFESSIONAL WARRANTY: Your new Bosch measuring tool is covered by a one-year limited warranty, with an additional year of coverage when you register your tool within eight weeks of purchase. For details, visit the Bosch website.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DBWSSPT2 |
| Adjustable Length | No |
| Are Batteries Required | Yes |
| Batteries Required? | Yes |
| Best Sellers Rank | #11,090 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #24 in Stud Finders & Scanners |
| Brand | Bosch |
| Brand Name | Bosch |
| Color | Bosch Blue |
| Customer Reviews | 4.0 out of 5 stars 4,508 Reviews |
| Included Components | (1) GMS120-27 Wall Scanner, (2) AA Batteries, (1) Soft Pouch |
| Item Dimensions L x W x H | 7.32"L x 3.4"W x 1.3"H |
| Item Type Name | Detection Tools |
| Item Weight | 0.86 Pounds |
| Manufacturer | BOSCH |
| Manufacturer Warranty Description | Bosch measuring and layout tools are covered by a one year limited warranty with an additional year when you register your tool within eight weeks of purchase - for details,call 1-877-BOSCH99 |
| Material | Plastic |
| Material Type | Plastic |
| Model Number | GMS120-27 |
| Power Source | Battery Powered |
| UPC | 000346817638 |
| Unit Count | 1.0 Count |

## Product Details

- **Batteries Required?:** Yes
- **Brand:** Bosch
- **Color:** Bosch Blue
- **Material:** Plastic
- **Power Source:** Battery Powered

## Images

![BOSCH GMS120-27 Professional Wall Scanner, Multi-Function Stud Finder, and Live Wire Detector for Electricians, Plumbers & Contractors - Image 1](https://m.media-amazon.com/images/I/41ZnLJ6u2pL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This easy-to-use stud/metal/wire finder is great
*by S***E on November 12, 2019*

I use it for the thick drywall/plaster or wood floors in my house and works much better than the cheaper electronic ones I have used in the past. Most of my 1950s home's walls have drywall coated in plaster and are about 1" thick is most spots so non-electronic and electronic stud finders never worked too well. Remodeled areas of my home also have the standard 5/8" or 1/2" thick drywall and 3/4" thick wood paneling which I use this mostly successfully on. I also used this successfully to detect flood joists beneath wood flooring, copper and galvanized pipes behind cement board/tile and to find rebar in cement. It can detect steel as deep as 4.75" in the wall, wood up to 1.5" and wires up to 2". Using it around the house, I find it works better in the thick walls and wood paneling, especially for finding live wires. In the standard thickness drywalled walls, it does not find electrical wires well but it does find studs and plumbing well. The only downside to this detector is I cannot get it to consistently find electric wires behind 1/2" or 5/8" drywall which is standard on most homes. In most cases, it will not detect them at all but does give a reading sometimes. This is probably due to the finder only being able to detect wires up to 2" deep in the wall. Sometimes wires are not within 2" of the drywall surface. It also cannot detect studs well behind wood paneling which is not surprising. I find it pretty user-friendly, just turn it on, set your mode (wood, metal, electrical) then place it on the wall and give it a second to calibrate. Afterwards, start searching. It will alert you to whatever mode you have it set on with a bar gauge. When you have it on wood mode, it will also alert you to metal and wires which is convenient. It makes noises as you get closer (you can turn the sound off, it is a bit irritating). When you find the center of a stud, pipe or wire, the finder has a convenient holes you can stick a pencil through the mark it. It seems to find wood with the assistance of finding screws/nails and overall, I find its best to scan up and down to find the exact position of the stud, pipe or wire. You probably wont get the exact location on the first bullseye. The finder also has a backlight for the screen when using in dark areas. The finder comes with a 9v battery, carrying case and directions as well. The directions take a little reading. Overall, this is great for finding studs and pipes but 4/5 stars for the general inability to find electrical behind standard thickness drywall. 5 stars for versatility and ease of use. I thought about knocking it down a star for general failure to detect wiring but its scan range for wiring is limited as stated.

### ⭐⭐⭐⭐⭐ Reliable and Accurate—Finally a Stud Finder That Works
*by I***A on August 1, 2025*

I’ve tried a few budget stud finders in the $20–40 range, and most were unreliable—one didn’t work at all. This one, however, is flawless. It comes with 2 AA batteries, so it’s ready to go right out of the box. It immediately located studs with an audible tone, and also detects wires and metal. I especially love the built-in marking hole in the center—it makes it easy to pencil your spot without guessing. Excellent tool and well worth the price.

### ⭐⭐⭐⭐ Works on plasterd walls!
*by L***E on September 1, 2025*

This is the only stud finder that has worked with our plastered walls. So grateful to have it.

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-05*