Bosch Home & Garden Digital Detector (Green) helps to locate live electrical cables as well as ferrous and non-ferrous metals It features an LED with “traffic light” system and acoustic signal that indicates if drilling is possible It features automatic calibration, so the device only calibrates once the it is set up against the wall The detector offers intuitive handling with easy one-button operation and deactivates after 10 minutes of idle time Detection depth steel, max 70 mm Detection depth copper, max 60 mm Detection depth of live cables, max. 50 mm