GMS 120 is the most reliable multidetector in its class. Highest reliability: Automatic calibration finds all objects and avoids application errors. Reliable location even of deep objects - up to 12 cm depth. Even more reliable detection of objects with three-color LED light ring. Precise display of the object centre with the Center Finder scale and display of material properties. Better visibility of the result through an illuminated display. Marking opening with LED light ring. Three detection modes for different applications: Dry construction mode, metal mode, live wire mode.