This tool is a hand-held wall scanner used to quickly detect magnetic metals such as steel bars, iron pipes, and non-magnetic metals such as aluminum pipes and copper in walls, roofs and floors, as well as non-metallic materials such as beams, PVC water pipes, etc. . As a charged object, for example, a charged wire. The device is a three-in-one metal/voltage/stud detector. It uses electronic signals to locate the precise location of studs, ceiling joists, AC wires, and metal through drywall, concrete, and other common wall materials. Once the edge of the stud is detected, it emits audio and visual signals (LCD display), allowing you to easily determine its center position. This machine is an ideal tool for DIY enthusiasts, professional electricians and users in the decoration field. It is widely used in family house decoration and construction site., Manufacturer: CFWWSAQ