WALL DRIVEWAY SCANNER: The cable finder offers scanning modes including 1/2 inch (maximum mm) scan studs, mm) and 1.5mm (maximum) depth), metal scanning depth up to 3.15 inches (80 ac ( 51 mm). It is suitable for wood, beams, joists, metal, AC cables, floors, ceilings, walls of objects behind deeply buried objects. Screen LCD and audible alarm: The LCD display of the wall detector can clearly show the location of the material, when the edge of the material is detected, the signal is weak, and when the center of the material is detected, the signal is strong and a beep sounds ., the stud finder will beep. Multi-occasion application: It not only provides you with first-class quality and high precision, but also provides multi-functions to meet your actual needs for drywall, drywall, towers, ceilings, plasterboard walls, wall panels, etc. The product includes a wall detector. There is no battery in the factory and a 9V battery is required. Applicability: After using the wall finder to find the wood bracket on the back of the drywall, you may decide to screw it directly or drill a hole in the wooden frame according to the weight of the item to be hung, and put it on the plastic to expand it. How to use: After the battery has been installed, press the mode button to power on, then select left to test, force on. the entire back is covered wall slip detection. When you test wood or metal AC current, the device is energized, it shows intensity and direction, the opposite position changes from green light to red buzzes.