1. 5 in 1 design: using 5 in 1 design, more powerful, more precise, longer lasting, to give you an excellent using experience. 2. Alarm design: alarm design, so that you can know the situation of the wall at any time, so that the operation is more accurate. 3. Quick Positioning: This product quickly and easily locates metal studs, joists, metal tubing, rebar, live AC wires behind walls, floors and ceilings. 4. Wide application: can clearly identify objects inside the wall, more intuitive, more accurate. Suitable for wood detection, metal detection, current detection 5. Essential tool for family use: practical, durable, easy to use, it can detect the change in density of the space behind the wall, it is a practical tool for the family. Specification: Item Type: Wall Scanner Sensor Material: ABS Weight: Approx. 211g / 7.4 ounces Alarm mode: buzzing Power supply: 6F22x1.9V section (battery supplied) Display: green LED backlight screen Package list: 1 x wall scanner sensor 1 x Specification