Features: Stud finder wall scanner includes four different scanning modes, namely stud scan, deep mode, metal scan, and AC scan. Used for finding and locating the center and edges of wood studs up to 3/4 in. (19mm) deep; The deep mode is used for locating up to 1.5 in. (38mm) deep; The metal scan is used for detecting metal (such as 1/2 inch rebar) up to 2.36 in. (60mm) deep; And the AC scan detects live unshielded AC wires up to 2 in. (51mm) deep. The multifunctional wall scanner sensor has a backlit graphic LCD display, which can display many clues during the detection process. This stud detector has an automatic calibration function. Place it flat on the wall, turn on the power button, and then press the "Scan" button to start calibration. The stud finder scanner can accurately and quickly locate the studs, metals, pipes, steel bars, joists, the edges and centers of beams and live AC wires hidden behind walls, floors and ceilings. It can also meet your actual needs in drywall, lathe wall, plasterboard wall, wallboard, etc. High-quality and high-precision detection save you a lot of time and energy, make tasks easier, and bring convenience to your life. Package Includes: 1X Stud Finder Specifications: Material: ABS+Metal Size: 180x80x35mm/7.09x3.15x1.38in Color: Red/Silver note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.