- Precise and fast detection: The stud detector uses an intelligent microprocessor chip with high sensitivity to detect wood, pipes, metal and AC cables hidden in walls, providing accurate and quick location results. - 2.5-in-1 multi-function detection with 5 scan modes: Includes ½ inch, 1 inch and 1½ inch scan modes to locate the center and edges of wood, beams, metal or deeply buried objects. Metal scan mode detects both ferrous and non-ferrous metals to a depth of 2.36 inches. AC scanning detects shielded 80 up to 240 AC voltage lines to a depth of 2 inches. - Automatic calibration, easy to use: Turn on the stud finder, lay it flat against the wall, press the scan button and it calibrates automatically. The intelligent micro sensor chip flashes and beeps when hidden wood, metal and AC lines are found. - LCD display and audible warning: The signal bar on the LCD display indicates distance and direction of approaching objects, and it beeps to help locate them. The LCD is backlit for clear visibility in low light conditions. - Practical use scenarios: - Mounting a flat-screen TV or heavy shelves: locate studs and avoid hidden pipes or electrical wires behind the wall. - Home renovation or drywall work: scan to identify wood framing, metal studs, or buried utilities before drilling or cutting. - Electrical or plumbing projects: detect live AC lines and metal pipes to plan safe routes for new wiring or fixtures.