Bosch Professional Stud Finder GMS 120
The GMS 120 stud and wire detector can detect wood, magnetic metal, non-magnetic metal and live cables at depths of up to 38mm, 120mm, 80mm and 50mm, respectively. With the Center Finder, users can detect the center of objects in walls and mark the point using the marking hole. The LED ring turns red when an object is detected, yellow when an object is nearby, and green when no object has been detected.
Three Detection Settings
With three specialized detection settings, the GMS 120 can provide better results for specific applications.
Metal Setting: The metal setting can be seen as the standard detection function for the wall scanner and is capable of detecting metal and live wires. When the tool is needed specifically as a metal detector, select the metal setting.
Live Wire Setting: The live-wire setting is optimized to detect live wires. For safety reasons, all settings can recognize live-wires, but this setting is specialized for that application and therefore acts as a more accurate voltage detector.
Drywall Setting: The drywall setting is specifically optimized to detect wooden and metal studs behind drywall and can be used specifically as a stud detector. This setting can also detect metal objects and live-wires, but the metal and live-wire settings are optimized for detecting those objects.
For best results:
Make sure voltage is applied to the cable being searched for (i.e. by turning on the light)
Remove any metal jewelry and gloves
Turn off or remove for nearby electronic devices which could interfere with detection
Turn on the device and select the correct detection setting for the application
Hold the cable finder firmly by the rubber grip
Place the wall scanner flat against the wall and move it slowly 3x horizontally and vertically
1 x 9V Battery
From the manufacturer
The standard detection setting, the metal setting provides the best detection for magnetic (≤12cm) and non-magnetic (≤8cm) metals and can detect live wires up to a depth of 5cm on various wall types.