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 38mm. 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 a maximum of 3 inches (76mm); 3. AC line scanning mode: position the AC wire at 76 mm (3 inches) Precise positioning - This 3-in-1 central stud finder, metal detector and AC fire wire detector is ideal for decorating the house. It can avoid unnecessary loss, when you want to dig a hole to hang pictures or install shelves, etc., precise positioning through hidden metal pipes, fire wires, studs and wooden frames Easy to use - 1. 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. Automatic shutdown function Product size: 15.4 x 6.9 cm. Product color: orange Delivery quantity: One piece Note: The data is all manually measured, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.