Highly Accurate Wall Scanner: The stud finder uses an advanced sensor system to ensure accuracy after years of testing and upgrades. It can quickly locate studs in wood, metal, and live wire. Whether you're a professional, homeowner, or DIY enthusiast, this handy tool is invaluable. Simply calibrate the tool before each scan, and then you're ready to drill. 4-in-1 Scanner with Deep Detection: The scanner includes four different scanning modes for wood, beams, joists, metal, AC wires, and objects deeply embedded behind floors, ceilings, and walls. The STUD mode detects wood beams and joists in drywall up to 1.9 cm. The Deep mode detects wood and metal studs up to 3.8 cm. The Metal mode detects pipes, rebar, aluminum, and copper up to 6 cm. It also detects live AC and electrical lines up to 5.1 cm. <p>Enhanced LED Display and Clear Audible Warning – The wall sensor features a large LED display and a loud, clear audible warning. As you move this tool along the wall, the LED display provides a clear direction and precise location of objects, while the audible warning indicates the edge or center of the object on the wall. This makes your DIY projects easier and faster. That's why it's recommended to use this handy tool. <p>Automatic Calibration for Efficient Scanning: The Mocita stud finder will automatically calibrate itself when you turn it on. Ensure it is calibrated in a location without any studs or AC wires nearby. In stud and deep mode, simply calibrate it on the wall. In metal and AC mode, calibrate it in the air. You will then receive an accurate warning to avoid drilling into metal wires, AC cables, or other defects. <p>Size: Approximately 172 x 76 mm. <p>Color: Black and silver <p>Quantity: 1 piece (battery not included)<p>