Detects the center position of wooden studs and the positions of metal studs and live electrical wires behind walls made of wooden boards and gypsum boards. This helps you anchor safely and accurately while avoiding wiring. LCD backlit display and audible indication: The illuminated graphical LCD shows mode, detection strength, and other status information, while an audible signal confirms detections for quick, hands confirmation. Compact handheld design with antislip grip: Easy to hold and operate as a handy household tool, suitable for a range of DIY projects. Smart beep feature: An audible beep reminds you when a stud location is identified, aiding quick marking and precise placement. Use scenarios: Mounting a heavy shelf or wall cabinet on a wooden wall: Locate the stud center to ensure strong anchors and avoid wires behind the surface. Installing a flatscreen TV bracket on drywall with wooden framing: Find safe anchoring points by identifying stud centers and avoiding live wires. Renovation or electrical work: Detect metal studs and live wires behind walls before cutting or drilling to prevent damage and improve safety.