DSF01 6-in-1 Multifunction Stud Finder and Wall Scanner. Key benefits and why you need it: - Quickly locate hidden hazards and structures inside walls, ceilings, and floors to avoid accidental drilling into live wires, pipes, or reinforcement rods. - Reduce guesswork when mounting TVs, cabinets, or shelves by finding exact stud centers and metal fasteners for secure fixture placement. - Save time on renovation and repair tasks with clear visual and audible indicators and deep scan capability for thicker materials. What this tool does: - Detects iron and nonferrous metals, wooden studs, and live AC cables in walls, ceilings, and floors. - Locates nails, screws, rebar, metal pipes, copper wiring, and timber studs precisely and rapidly. - Provides two wood-finding modes: Exact mode for shallow, precise placement and Deep mode for thicker or covered wood structures. Main features: - Six detection functions in one compact unit for metal, nonferrous metal, wood studs, live AC cable, magnetic indicator, and signal strength measurement. - Dual calibration: automatic zero calibration when lifted and manual calibration with a button for tricky surfaces. - Precise positioning with three-stage LED indicators and an audible beep to mark the approach and the exact detection zone. - Large, easy-to-read LCD showing scan mode, detection depth, signal strength, battery level, and midpoint marker. - Ergonomic design with a rubberized rear surface to protect walls and provide a comfortable grip during scanning. - Sound on/off option and magnetic and nonmagnetic indication. - Automatic shutdown after approximately five minutes of inactivity to preserve battery life. Performance and compatibility: - Maximum scan depths: iron metals up to 120 mm; nonferrous metals such as copper up to 100 mm; live AC cables (220V 50Hz or 110V 60Hz) up to 50 mm; wood studs Exact mode up to 20 mm and Deep mode up to 38 mm. - Note on AC cable detection: thin cables or cables encased in PVC conduit may reduce AC mode accuracy because the conduit can shield the electromagnetic field; in such cases use metal mode for consistent detection. - Units selectable in inches or centimeters. - Power: 1 9V battery (not included). - Operating temperature range minus 10 to 50 degrees Celsius and storage range minus 20 to 70 degrees Celsius. - Recommended operating relative humidity 35 to 55 percent. How to use correctly: - Place the DSF01 flat on the detection surface and select the wood mode for stud locating. - Wait for the green light to confirm zero calibration, then press the unit firmly against the surface and move it slowly left and right at a constant speed. - Keep the device in contact with the surface during scanning and avoid lifting; mark the center point when the left control light and the audible beep indicate the precision detection zone. Practical use scenarios: - Mounting a wall-mounted television: locate timber studs and avoid hidden AC cables for secure and safe bracket installation. - Installing kitchen cabinets or heavy shelving: find center of studs and metal fasteners to ensure load-bearing attachment. - Renovation and maintenance work: detect metal pipes, rebar, and wiring behind drywall or floors before cutting or drilling to prevent damage. Package contents: - 1 DSF01 stud finder. - 1 user manual. - 1 fabric storage pouch. Additional notes: - Allow a 1 to 3 mm tolerance due to manual measurement. - Do not include the battery; one 9V battery is required.