Accurate And Fast: The detector features a high-sensitivity intelligent mini sensor chip that accurately and quickly locates the edges and centers of metals, studs, joists, pipes, and AC lines behind walls, floors, and ceilings. This detection capability helps save time and effort, making tasks easier to complete. Whether you're a homeowner or a DIY enthusiast, this is an ideal choice.5-in-1 Depth Detection: This stud detector wall scanner offers 5 scanning modes. The upgraded 5-in-1 mode meets a variety of detection needs.Digital LCD Display And Audio Alarm: The stud detector includes a digital LCD display and audio alarm to help identify the precise location of targets. The display shows the detection mode, center point, low battery indicator, and other status information. When a material is detected, both the display and audio alert indicate proximity to the target.Auto-Calibration Provides Maximum Reliability And Accuracy: In stud/deep mode, place the device on the surface to be scanned for calibration. In AC/metal mode, calibrate in the air.Usage: Quickly locate wood, metal, and AC wires hidden in walls, floors, and ceilings. It works effectively on drywall, wallpaper, wood floors, soundproof ceilings, painted walls, and similar surfaces. Helps avoid hazards during installation of TVs, cabinets, garage racks, and other fixtures.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 Colour: Black-Silver Material: ABS Size: Approximately 152 x 62 x 28 mm Package Contents: 1 x Wall Scanner 1 x Manual (English) Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the photo and the actual product. Measurement may vary by +/- 1-3 cm.