Accurate and fast: The stud detector uses an intelligent microprocessor chip with high sensitivity to accurately and quickly detect wood, pipes, metal, and AC wires hidden in walls. 5-in-1 multi-functional detection: Wood Detection I: 1/2 inch (12.7mm); Wood Detection II: 1 inch (25.4mm); Wood Detection III: 1 1/2 inch (38mm); Metal Detection: 2.36 inches (60mm); AC Detection: 2 inches (51mm). LCD display and audible warning: The signal bar on the LCD display indicates the distance and direction of approaching objects and beeps to help determine the location. The LCD screen has a green backlight for clear visibility in low light conditions. Wire warning indication: When scanning in stud, depth, or metal scan mode, the wire warning alerts you to the presence of live AC power, helping to avoid hazards during installations such as TVs, cabinets, picture frames, and shelves. Easy to use: The device features one-click operation, making it simple to use for home decoration, renovation, and construction applications. Item: Wall Scanner Color: Yellow Main Material: ABS Display: LCD with green backlight Battery: 9V 6F22 (not included) Detection Depths: - Wood Detection I: 1/2 inch (12.7mm) - Wood Detection II: 1 inch (25.4mm) - Wood Detection III: 1 1/2 inch (38mm) - Metal Detection: 2.36 inches (60mm) - AC Detection: 2 inches (51mm) Product Size: 176 x 72 x 37mm Package Size: 19 x 9.5 x 5.3cm Package Weight: 220g Package List: 1 x Wall Scanner 1 x User Manual