1. Precise and Fast: The stud detector uses an intelligent microprocessor chip with sensitivity to detect wood, pipes, metal, and AC cables hidden in walls accurately and quickly. 2. 5in1 MultiFunction Detection: Features 5 scan modes, including ½inch, 1inch, and 1½inch scan modes to locate the center and edges of wood, beams, metal, or deeply buried objects; metal scan mode for detecting ferrous and nonferrous metals up to a depth of 2.36 inches; AC scanning to identify shielded 80240V AC voltage lines up to a depth of 2 inches. 3. Automatic Calibration, Easy to Use: Simply turn on the stud finder, place it flat against the wall, press the scan button, and it's ready to calibrate. The intelligent micro sensor chip flashes and beeps when hidden wood, metal, or AC lines are detected. 4. LCD Display Audible Warning: The signal bar on the LCD display alerts you to the distance and direction of approaching objects, with beeps to pinpoint locations. The backlit LCD ensures clear visibility even in lowlight conditions.