Feature: 1. Accurate and Efficient: This stud finder is equipped with upgraded smart sensors, which can accurately and quickly locate wood, metal, AC wire, etc. behind the wall, saving the user\u0027s time and energy. 2. 6-in-1 Multi-function Detection: This stud finder has 6 detection functions: wooden terrier depth detection 12mm, 25mm, and 38mm, metal detection recognition depth greater than 60mm, and AC wire detection maximum depth 51mm, and magnet physical nail finding function, more reliable. 3. Calibration Before Use: Place the detector on the wall to be detected, press the MODE key to switch on, press the measurement key, when the LCD aperture gradually becomes smaller until you hear the \u0027di\u0027 sound indicates that the calibration is complete, then you can use it. Specification: This is a hand-held rapid wall test instrument designed to detect magnetic metals such as rebar and iron pipes, non-magnetic metals such as aluminium and copper pipes, non-metals such as wooden beams and electrically charged objects such as wires hidden in walls, ceilings and floors. Features: Accurate and Efficient: This stud finder is equipped with upgraded smart sensors, which can accurately and quickly locate wood, metal, AC wire, etc. behind the wall, saving the user's time and energy. 6-in-1 Multi-function Detection: This stud finder has 6 detection functions: wooden terrier depth detection 12mm, 25mm, and 38mm, metal detection recognition depth greater than 60mm, and AC wire detection maximum depth 51mm, and magnet physical nail finding function, more reliable. Calibration Before Use: Place the detector on the wall to be detected, press the MODE key to switch on, press the measurement key, when the LCD aperture gradually becomes smaller until you hear the 'di' sound indicates that the calibration is complete, then you can use it. Durable Quality: This detector features an ergonomic handle that makes scanning easier and more stable while protecting the product from wear and tear. Whether you are a professional, homeowner or DIY enthusiast, this is the perfect choice for you. Applicable Scenarios: The wall detector can detect metal, wooden beams and electrified cables hidden in walls, ceilings and floors (referred to as walls, ceilings and floors are conventional concrete, tiles, wooden boards, etc.). Specifications: Color: Black / Silver / Orange (Optional) Material: ABS Operating Temperature: 0-40°C Operating Voltage: One 9V battery (Not included) Operating Current: