1. 3-in-1 multi-scanner stud detector for wood, metal, and AC wires. Locates wood and metal studs, joists, metal pipes, rebar, and live AC wires behind walls, floors, and ceilings. 2. Features a large LCD display and audible alert to indicate accurate object location. Displays stud center and precise position to save time. 3. Easy to operate: after installing the battery (not included), a long beep sounds upon power-on. To restart after auto-shutdown, press the test button for 2 seconds. 4. Lightweight and durable, ideal for home, office, or workshop use. Supports DIY projects including TV mounting, cabinet installation, picture framing, and garage rack setup. 5. Compact, portable design with low-battery indicator. Ergonomic shape ensures comfortable handling. Item Type: 3-in-1 Detector Material: ABS Color: As shown Product Size: Approx. 15.5 x 7 x 3.4 cm / 6.1 x 2.8 x 1.3 in Weight: Approx. 185 g / 6.5 oz Battery: 1 x 9V (6F22) battery (not included) Detection Modes: - Stud Scan Mode: Detects edges of wood and metal studs up to 1.5 inches (38 mm) deep - Metal Scan Mode: Detects iron, copper, aluminum pipes, and other metals up to 2.36 inches (60 mm) deep - AC Wire Scan Mode: Detects live AC wires up to 2 inches (51 mm) deep Working Temperature: 0°C–40°C Functions: 1. Automatic calibration for all detection modes 2. AC wire warning function 3. Edge detection for wooden studs with on-screen indication 4. Low-battery indicator Application: Detects center position of wooden studs, metal objects, and live AC wires in drywall, plasterboard, and wooden surfaces. How to Use: 1. Insert battery (not included). 2. Testing and calibration: - After battery installation, unit powers on with a long beep. After auto-shutdown, press test button for 2 seconds to restart. - Press mode button to select stud, AC wire, or metal detection. - Place detector base flat against surface. Function symbol remains steady. Press measurement button to sample surface. Function symbol begins flashing after sampling. - Release measurement button and slowly move detector along surface. - When center bar appears on LCD, edge of stud is detected. Mark position. Press measurement button to silence alert during marking. - Repeat sampling step, then scan from site direction to locate site edge. - For improved accuracy, repeat sampling and scanning steps as needed. Includes: 1 x 3-in-1 Detector (battery not included) 1 x Instruction Manual