Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si [5 in 1 Design]Our stud finder wall scanner adopts 5 in 1 design, which is more powerful, more accurate, and more . It is quick and easy to locate wood metal studs, joists, metal pipe reinforcement and live AC wires behind walls, floors and ceilings. [Precise Operation]It adopts alarm design, allowing users to know the wall condition at all times and make the operation more accurate. It can clearly identify what objects are in the wall, which is more intuitive and accurate. It can be used for wood detection, metal detection, current detection. [Widely Uses]This stud sensor beam finder has a wide range of application. You can use it whenever you want to see inside an opaque object. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Power Supply: 9v battery not included Colour:Gray Material:plastic Package Contents: 1Set x Stud Finder Wall Scanner Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.