Highly Accurate Wall Scanner: The stud finder uses the advanced sensor system to ensure accuracy after years of testing and upgrading. It can quickly locate wood, metal, and live wire studs. Whether you are a professional, homeowner, or DIY enthusiast, this handy tool is very useful. Just calibrate this tool before each scan, then you are ready to drill holes. 4-in-1 Scanner with Deep Detection - The scanner includes four different scanning modes for wood, beams, joists, metals, AC wires, and objects deeply embedded behind the floor, ceiling, wall. STUD mode detects wood beams and joists in drywall up to 3/4 inch. Deep mode detects wood and metal pieces located up to 1 1/2 inches. Metal mode detects pipes, rebar, aluminum, and copper up to 2 1/2 inches. AC for voltage and live electrical lines up to 2 inches. Upgraded LED Display & Clear Sound Warning - The wall sensor has a large LED display and a loud and clear sound warning. When you move this tool along the wall, the LED screen indicator will give you a clear direction and accurate location of objects, and its sound warning will show you the edge or center of that object on the wall. This will make your DIY projects easier and faster. That's why it is recommended to use a handy tool that is essential for you. Auto Calibration for Efficient Scanning: Mocita stud finder will automatically calibrate when you turn it on. Make sure it is calibrated to a position without any studs or AC wires nearby. In stud and deep mode, just calibrate it on the wall. In metal and AC mode, please calibrate it in the air. Then you will get an accurate warning to avoid drilling into metal wires or AC cables or other defects. Size: Approx. 172 x 76 mm. Color: Silver Black Quantity: 1 pc (without battery)