Feature 1Smart Sensor: The stud finder is equipped with an upgraded and sensitive smart sensor chip that accurately and quickly finds the edges and centers of metal, studs, joists, pipes, and AC wires behind walls, floors, and ceilings. 2Audio Alarm: Equipped with LCD display and sound alarm, and can detect the exact position of the object and will alarm when the detector is close to the edge or center of the target. 3Sophisticated Design: Professional technology and excellent production processes provide you with the premium and precision stud detector. 4Accurate and Fast: Quick detection saves time and effort for the user, making the task easier to complete, whether you are a professional, homeowner or DIY enthusiast, it must be a great choice. 5Wide Application: Wall scanner detector can work on different wall surfaces, such as slats, wallpaper wood floors, acoustic ceilings, painted walls, etc.SpecificationItem Type:StudFinderWallScannerMaterial: ABSBattery Model: 9V battery x1 (Shipped without battery) .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x StudFinderWallScanner1 x English User Manual