3 in 1 Multifunction Stud Finder- This stud finder includes 3 different scanning modes, which provides users with more detection needs. Detects metals up to 76mm deep. Detect tensions up to 76mm deep. Detects wood and metal nails up to 38 mm. 3 detection modes - 1. Sweep sweep mode: place the edges of metal and wood bolts into a normal wall up to 1.5 inches (38mm); 2. Metal scanning mode: place metals such as iron, copper and aluminum pipes positioned at a maximum of 3 inches (76 mm); 3. AC Line Scan Mode: Position the AC wire 76mm(3inch) away Precise Positioning- This 3-in-1 central stud finder, metal and fire wire detector This is ideal for decorating the house. It can avoid unnecessary loss, when you want to dig a hole for hanging pictures or installing shelves, etc., precise positioning through hidden metal pipes, fire wires, studs and wooden frames p> Easy to use - 1. The LCD screen is easy to read for the backlight.2. Automatic calibration of metal detection, tension and studs. Audio and visual indications (audio reminder and easy-to-read LCD screen). 3. Auto-off function Product size: 15.4 x 6.9 cm. Product color: orange Delivery quantity: One piece