4-in-1 Wall Scanner: The cable finder offers 4 scanning modes and can quickly and easily locate metal, bolts, metal reinforcements and active AC cables behind walls, floors and ceilings. 0.75 inch and 1.5 inch (38 mm) stud scanner, 2.36 inch metal scan and 2 inch (51 mm) AC scan. High Accuracy Detectibility - The line detector uses the most advanced internal sensor, high-precision central bolt positioning and edge positioning, and precise detection of magnetic/non-magnetic metal in the space behind the hidden wall, so that you can use it during the renovation process. Effectively avoid live AC wires. LED display of measurement results- The locating device has a bright green LCD display and audible warnings to detect the exact position of objects. When the material is found, the LCD screen will beep and let you know if you are getting close to your target. Quick detection saves you a lot of time. Applicability -- After finding the wooden bracket on the back of the plasterboard with the wall detector, you can decide whether you want to screw it directly or drill a hole in the wooden frame and then put it in the plastic to stretch. Application for Multiple Occasions -- Not only provide you first-class quality and high precision, but also offers multi-functional features to meet your actual needs for drywall, turning wall, ceiling, plasterboard, wall plate, etc.