Features: Unparalleled Accuracy and Intuitive Feedback: Our wall scanners feature advanced LCD technology to clearly display measurements. This visual clarity, combined with an audible signal, guides you through the detection process, ensuring accurate readings every time. Purpose: Quickly locate wood studs, metal objects, and live AC wires hidden in walls, floors, and ceilings. Works on flat surfaces, wallpaper, wood flooring, acoustic ceilings, spray-painted walls, and similar materials. Helps prevent accidents during installation of televisions, cabinets, garage racks, and other fixtures. 5-in-1 Stud Scanning Tool: Supports five scanning modes: 1/2 inch (13 mm), 1 inch (25 mm), and 1.5 inches (38 mm) for stud detection; 38 mm for metal detection; and 51 mm for AC wire detection. Highly Accurate: Equipped with an advanced intelligent microprocessor chip that accurately and quickly detects edges and centers of wood studs, metal studs, joists, pipes, and live AC wires behind walls, floors, and ceilings. Audible Alarm: Provides precise detection of studs and wires behind walls. A beeping alarm alerts you when near the edge or center of the target—ideal for both DIY users and professional contractors. Notice: 1. Actual color may vary slightly from the image due to lighting conditions. 2. Please allow 1–3 cm measurement deviation due to manual measurement. Power Supply: 9V battery (battery not included) Battery Model: 9V battery (6F22) Package List: 1 × Multifunctional Handheld Wall Detector