Bosch Wall/Floor Scanner with Radar D-TECT120 D-TECT120 features Spot Detection technology that can detect objects instantly when placed on a wall, panel or floor. Since the Bosch D-TECT120 never needs calibration, you can focus on the job without worrying about accuracy. Three modes ‒ drywall, universal and concrete ‒ make this the right detector for multiple jobs. Universal mode sees through more material, it sees "anything in anything". This device offers sound and a light to show user when something is detected behind a wall, panel or under flooring. FEATURES: Bosch ultra-wide band (UWB) radar technology - offers a wide range of detection performance up to 4-3/4 In. in different materials Calibration free - ready to use as soon as it is switched on for instant scanning with no calibration errors Spot detection - instantly detects objects when placed on detection surface, no back and forth required Three modes - drywall, universal and concrete detects ferrous and non-ferrous metals, wood, live wiring and plastic pipes Large illuminated display - the traffic light makes detection easy to understand; objects are indicated through arrows, center cross-line and color code: green (nothing detected), orange (something detected), red (object detected) INCLUDES:(1) D-TECT120 Wall/Floor Scanner with Radar (4) AA Batteries (1) Hard Carry Case Bosch Wall/Floor Scanner with Radar D-TECT120