Features: 1. Auto-Calibration – The wall scanner automatically calibrates for maximum reliability and accuracy. In stud/deep mode, simply place it on the wall to calibrate; in AC/metal mode, calibrate it in free air. 2. Advanced Sensor Technology – Equipped with high-precision sensors, it quickly and accurately locates studs, wood, metal, and live AC wires. 3. Clear LCD Display – When a material is detected, the LCD visually indicates direction and proximity, accompanied by an audible beep that intensifies as you near the target, saving time and effort. 4. Fast & Easy Detection – Quickly locates studs, metal pipes, and live wires behind walls, floors, and ceilings, making it ideal for hanging TVs, cabinets, shelves, and more. 5. Safe & Versatile – Helps avoid drilling hazards by detecting hidden objects. Suitable for use in homes, offices, and renovation projects. Product Details: This 4-in-1 wall scanner features auto-calibration, an intuitive LCD display, and four scanning modes: Stud Scan (approx. 19mm depth), Depth Scan (approx. 38mm), Metal Scan (approx. 60mm), and AC Wire Scan (approx. 51mm). Made of durable plastic, it is lightweight yet sturdy, ensuring reliable performance for various detection tasks. No tools are required for operation—just install a 9V battery (not included) and start scanning. Specifications: - Item Type: Wall Scanner - Material: Plastic - Weight: Approx. 204g / 7.2oz - Size: Approx. 17 x 7.5cm / 6.7 x 3.0in - Battery: 1 x 9V Battery (not included) - Use: Detects metal, live AC wires, wood, and studs - Scanning Modes: Stud, Depth, Metal, AC - Package Includes: 1 x Wall Scanner, 1 x English User Manual