Feature: 1. 5 IN 1 STUD FINDER: This stud finder is used to detect wooden board, gypsum board material, metal position and live wire, with AC warning function 2. ALARM FUNCTION: This handheld wall scanner is alarm design, allowing you to keep track of the wall condition at all times, ensuring accurate operation. 3. MULTIPLE USAGES: Can quickly and accurately locate metal studs, joists, metal pipes, steel bars, and live AC wires behind wall, floors, and ceilings. 4. HANDHELD USE: The wall stud scanner is handheld design, making it comfortable to hold, and the compact size for easy carrying and storage. 5. LCD DISPLAY SCREEN: The wall detector is equipped with LCD display screen, which is clear and intuitive, suitable for wood, metal, AC, and other detection. Specification: Item Type: Wall Scanner Model: HW430 Material: ABS Power Supply Method: 1 x 9V Dry Battery (not included) Measurement Range: Wood Detection: |: 1/2 inch (12.7mm) II: 1 inch (25.4mm) III: 1-1/2 inch (38mm) Metal Detection: Approx. 60mm / 2.4in AC Detection: Approx. 51mm / 2in. Package List: 1 x Wall Scanner 1 x User Manual Note: Battery Not Included