Features:OOTDTYMost Accurate & Enhanced Security-TH250 Multi-Function Pin Detector is an electronic stud finder provides four different scanning modes with multi-sense technology, which can locate Metal/pins/wood/AC wires in multiple places on the wall. In all modes, this wall scanner always detects and indicates the AC wire live. Whether you are a professional, homeowner, or DIY enthusiast, you can find a great use in this electronic scanner.Upgraded Version Four Scanning Modes- The stud finder provides four scanning modes in total for detection. The SCAN STUD is used to find and locate the center and edges of wood or metal studs up to 0.75 in (19mm) deep; Deep mode for scanning a wall up to 1.5in (38mm) deep; metal scanning for locating and detecting metal (e.g. 0.5 inch rebar) up to 2.36in (60mm) deep; And AC Scanning to Locate AC Wires Up to 2 Inches (51mm) DeepHigh Efficiency with Graphic LCD Display- The multi-function wall scanner has a graphic LCD display, displaying the desired pin material, as well as the precise position of the pin. MKROYO digital stud scanner features a large LCD display along with a loud warning sound to detect the exact location of objects. When you find the material, the LCD will indicate the direction, and the intensity of the beep tells you whether you are closer to the target.Automatic Calibration-Audible Warning- The in-wall reinforcement scanner will be automatically calibrated when opened. Calibration is done by positioning the device on a wall without nails, alternating wires or metal. When an object is detected by the wall scanner, it will beep continuously. A loud warning sound along with an LCD screen helps to detect the exact location of objects. Easy to UseThis in-wall wire detector can quickly locate the metal AC wire that is hidden in the walls, floors, and ceilings of your home, help you avoid hazards when installing TVs, cabinets, garage shelves, etc. Specifications:Size: 167*75*38mm/6.57*2.95*1.5"Material: ABSSworking Method: lt; 50mA Standby Rate: lt; 1ua Operating Temperature: -20 - +50C Storage Temperature: -20 - +50C Power Supply: 1 X 6F22 9V Battery (Not Included)Package Included:1 * Finder Wall Reinforcements1 * User Manual