Accurate and fast: The detector uses a highly sensitive intelligent Mini sensor chip that can accurately and quickly locate the edges and center of metals, studs, beams, pipes, and AC wires behind walls, floors, and ceilings. Detection can save users' time and energy and make it easier to complete tasks. Whether you are a professional, homeowner, or DIY enthusiast, this must be the ultimate choice. 5-in-1 Deep Detection: This wall scanner stud detector has 5 scanning modes. Upgraded 5-in-1 mode provides users with more detection requirements. Digital LCD screen and audible alarm: The stud detector is equipped with an LCD screen and an audible alarm, which helps to detect the exact position of the object, in addition to displaying the detection mode, center point, low battery indicator, etc. When the material is found, the LCD screen and audible alarm will tell you if you are closer to the target. Automatic calibration gives you maximum reliability and accuracy: In stud/depth mode, place the LCD screen where you want to check the calibration; in AC/Metal mode, place it in the air for calibration. Usage: Quickly locate wood, metal, and AC wires hidden in walls, floors, and ceilings of houses. It can work in lath, wallpaper, wooden floors, soundproof ceilings, painted walls, and others. Avoid danger when installing TVs, cabinets, garage shelves, etc. Model: HLW330 Name: Multifunctional Wall Scanner 5 in 1 Stud Detector Battery model: 9V 6F22 battery (not included) Power type: Battery powered With LCD screen or not: Yes Color: Orange Material: ABS Size: about 152 x 62 x 28 mm Package contents: 1 x Wall scanner 1 x Manual (English) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3 cm.