5-in-1: The digital wall scanner has 5 scan modes, including 1/2", 1", and 1-1/2" scan modes for locating the center and edges of wood, beams, joists, metal, or deeply buried objects. The metal scan mode detects ferrous and non-ferrous metals up to a depth of 2.36", and the AC scan detects unshielded AC power lines up to a depth of 2". ACCURATE AND FAST: The stud detector uses a sensitive intelligent micro-sensor chip to accurately and quickly locate the edges and centers of metal, studs, beams, pipes, and live AC power lines behind walls, floors, and ceilings. LCD DISPLAY AND AUDIBLE ALARM: This stud detector is equipped with an LCD display and an audible alarm to detect the exact location of an object. Once you have found the target, you can determine proximity by the strength of the signal tone. EASY TO USE: Turn on the stud detector, place it flat against the wall, and press the scan button to calibrate. The intelligent sensor microchip flashes and beeps when it detects hidden wood, metal, or AC cables. VERSATILE USE: This wall detector works on various wall surfaces such as baseboards, wood paneling, acoustic ceilings, painted walls, and wallpaper. It helps avoid hazards when installing TVs, cabinets, shelves, and other fixtures. A digital 5-in-1 wall scanner with multiple scanning modes for locating wood, metal, and electrical wiring. The stud finder features an intelligent micro-sensor chip for fast and accurate detection of hidden objects. The LCD screen and audible alert indicate object position and signal strength. Simple operation: power on, calibrate, and scan walls for concealed cables and studs. Compatible with multiple surface types and ideal for safe installation of wall-mounted items.