13 in 1 multi-scanner stud detector for wood, metal, and AC wires. Helps you quickly and easily locate wood, metal studs, joists, metal pipes, rebar, and live AC wires behind walls, floors, and ceilings. Features a large LCD display and sound warning to help detect the accurate location of objects. Saves time by displaying the desired stud center and the precise position of the stud. Easy to use: after installing the battery (not included), a long beep sounds when turned on. When automatically turned off, press the test button for 2 seconds to restart. Lightweight, long-lasting, and convenient for use at home, in the office, or workshop. Makes DIY projects easier, such as mounting TVs, bathroom cabinets, photo frames, garage racks, and more. Compact design is easy to carry and use. Low battery indicator alerts when power is low. Ergonomic design allows comfortable handling. Specifications: Item Type: 3 in 1 Detector Material: ABS Color: As shown in picture 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 (Not included) Detection Modes: Stud Scan Mode: Detects edges of metal and wooden studs up to 1.5 inches (38 mm) deep Metal Scanning Mode: Locates metals such as iron, copper, and aluminum up to 2.36 inches (60 mm) deep AC Wire Scan Mode: Detects live AC wires within 2 inches (51 mm) Functions: - Automatic calibration for all detection modes - AC voltage warning function - Edge detection with center line indication - Low voltage indicator Application: Detects wooden stud centers, metal objects, and live wires in walls made of wood or gypsum board. How to Use: 1. Insert battery (not included). 2. Turn on: After installation, unit beeps once and shuts down automatically. Press test button for 2 seconds to activate. 3. Select mode: Press select button to choose stud, metal, or AC wire detection. 4. Place detector base flat against the wall. Press and release the measurement button to sample the surface. Function symbol will flash after sampling. 5. Slowly move the device across the wall. When the center bar appears on the LCD, the stud edge is detected. Mark the position. Press test button to mute beeping during marking. 6. Resample and scan from the opposite direction to locate the other edge of the stud. 7. Repeat sampling and scanning as needed for accurate results. Package Includes: 1 x 3 in 1 Detector (Battery Not Included) 1 x Instruction Manual