- 1.5-in-1 deep scan stud finder with 5 scan modes: 1/2 inch, 1 inch and 5 inch bolt scan, metal scan, and AC scan. It can locate wood studs, metal studs, beams, metal pipes, rebar and live AC wire behind walls, floors, and ceilings. - The magnetic bar finder wall detector is equipped with a large LCD display and a sound reminder to accurately detect locations. It displays bolt center and precise position, saving time. - Automatic calibration and easy to use: simply turn on the unit and place it on the wall for automatic calibration. It flashes and beeps when it detects the edge of a stud, ensuring reliability and accuracy. - Lightweight and versatile: suitable for professionals, homeowners and DIY enthusiasts. Perfect for mounting TVs, bathroom cabinets, picture frames and garage shelves. - Use scenarios: mounting a wall-mounted TV; installing bathroom cabinets; hanging picture frames or garage shelves.