HW-QB5 5-In-1 Wall Stud Detector Wood Current Metal AC Wires Detection 1. With five scanning modes: --Stud ?" Scan: Locates the center and edge of wood and metal studs up to ?" (13mm) deep --Stud 1" Scan: Locates the center and edge of wood and metal studs up to 1" (25mm) deep --Stud 1?" Scan: Locates the center and edge of wood and metal studs up to 1?" (38mm) deep --Metal Scan: Detects metal up to 3.2" (80mm) deep --AC Scan: Detects live unshielded AC wires up to 2" (51mm) deep 2. Usage: Quickly locate wood, metal, and AC wires hidden in the walls, floors, and ceilings of your home. It works on lath, wallpaper, wood floors, soundproof ceilings, painted walls, etc. Save you from danger when installing TVs, cabinets, garage racks, etc. 3. High-definition backlit display, easy to display data in a dark environment 4. The product is small, easy to carry and easy to use 5. Accurate positioning, fast search, improved work efficiency, in-depth exploration of safety and stability 6. Screen: green backlit screen 7. Power supply: 9V 6F22 battery (not included) 8. Product size: 145 x 60 x 30mm 9. Weight: 130g