WALL SCANNER IN -- The cable finder offers scanning modes, including scanning studs 1/2 inch (maximum mm), mm) and 1.5 (maximum) mm depth), scanning depth of metal up to 3.15 inch (80 ac (51 mm). It is suitable for wood, beams, joists, metal, AC wires floors, ceilings walls of objects behind deeply buried objects. LCD display and audible alarm --The LCD screen 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. that the edge of the stud is detected, the stud finder will beep. Multi-occasion application - Not only provides you with first-class quality and high precision, but also provides multi-function functions to meet to your actual needs for drywall, tower walls, 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 wooden bracket on the back of the plasterboard, you You can 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 in the plastic to expand. How to use it - after Having installed the battery, press the mode button to power on, then left select to test, activate force. whole back is covered wall slip detection. when test wooden or metal AC current the device energized, it displays the intensity and direction, opposite position changes from green light to red buzzes.