High Precision Stud Finder Sensor Advanced sensor technology can accurately and quickly locate the wood to metal AC line.It is used to detect the central position of metal or wood rods in the wall. Moreover, it can detect the functions of metal and voltage in the wall, and whether the wires in the wall are under voltage.Whether you are a professional or a DIY enthusiast, you can find great use in this digital stud scanner. . 4 in 1 Multifunction Wall Finder Digital wall scanner includes four different scanning modes for wood, beams, joists, metals, AC wires and deeply embedded objects.Deep scan locates the center and edges of wood and metal studs up to 1.5 inches deep; Metal scanning detects metals up to 2.36 inches deep; AC scan detects live unshielded AC wires up to 2 inches deep. Easy to read LCD display The digital stud scanner has a large LCD display with large audible warning to detect the precise location of objects. When you find the material, the LCD will show the direction and the intensity of the beep will let you know if you are closer to the target. Quick detection saves users time and effort, making it easier to complete tasks. Auto correction function When the beep sound and screen disappear, put the wooden beam viewfinder on the wall, open the stud viewfinder, and finish the calibration. Automatic calibration before use provides users with maximum reliability and accuracy. Then put it on the wall. After picking up the edge of the stud, the wooden beam sight will flash and beep. Safety Protection Stud Finder can quickly locate wood, metal and AC wires hidden in walls, floors and ceilings of homes. It can work on different wall surfaces, such as slats, wallpaper wood floors, soundproof ceilings, whitewashed walls, etc. Helps you avoid dangers when installing TVs, cabinets, garage shelves, etc. Product description Whether you're hanging pictures, installing a new set of shelving, or getting ready to start an addition, knowing where the studs are in a wall can be extremely handy! And a good stud finder can mean the difference between a successful DIY home project and a disaster. That's why a stud finder is important. This Stud Finder adopts the leveling sensors with high precision. This is the best choice for quickly and securely locating AC studs / metals / wires! Electronic stud finders have changed everything. Electronic stud finders give you an incredibly accurate view of the wall and show you exactly where each stud is. 1. High precision / reliability / consistency 2. Identify the width of the upright and the location 3. Easy to read screen and quick identifiers when hitting a stud 4. Increases sensitivity to more than 2 inches 5. Upgrade the model with 4 scanning modes to meet different needs Note: 1. This stud finder can quickly locate metal, studs, joists, pipes, live AC wire behind all kinds of walls, floors and ceilings, but except the cement board wall and of brick wall, you can use it on popcorn ceilings, plaster walls, textured surfaces, drywall, etc. 2. Please note: 9v battery is not included in package Step 1: calibrate the tool before each scan After choosing the mode, press and hold the scan button (on the side of the tool) to calibrate this tool. Wait until the reduction bars have disappeared and beep to confirm that the calibration is complete. In tenon / deep mode, place it on the wall where you want to detect it to calibrate it; In AC / Metal mode, put it in the air to calibrate it. Step 2: scan the wall Hold the button down, then slowly move the stud finder along the wall, if you accidentally shake or lift the scanner, the device needs to be recalibrated. The narrow on the screen with the beep changes, guides you to find the location of the stud. Step 3: Find the location of the upright When the signal bar is full and the beep sound is the loudest, it means you have found the center of an object. Mark it with your pencil.