Parts List: 1* Wall Scanner 1* Instruction Detailed description: Product name: Wall Scanner Material: ABS / electronic components Size: 152 x 62 x 28mm / 6 x 2.4 x 1.1 in Color: Black, Orange (optional) Battery type: 9v battery 6F22 (not included) Feature: 5 in 1, accurate & rapid, LCD display, audio alarm Application: lath, wallpaper wood flooring, acoustic ceiling, painted walls, etc. Note: 1. Please allow 1-3cm measuring deviation due to manual measurement. 2. Due to the different monitor and light effects, the actual color of the item might be slightly different from the color shown in the pictures. Thank you! [5 in 1]The digital wall scanner has 5 scanning modes, including 1/2", 1" and 1-1/2" scanning modes to locate the center and edge of woods, beams, joists, metals, or deeply embedded objects. Metal scanning mode to detect ferrous and non-ferrous metal up to a depth of 2.36”; AC scan detects unshielded AC voltage lines up to 2”. [Accurate & Rapid]The stud finder adopts an intelligent micro-sensor chip with the highest sensitivity, which can accurately and quickly find edges and center of metal, studs, joists, pipes, and live AC wire behind walls, floors, and ceilings. [LCD Display & Audio Alarm]This stud finder comes with an LCD display and sound alarm, which can detect the exact location of the objects. When finding the objects, the intensity of the beeping tells whether you are more close to the target. [Easy to Use]Turn on the stud finder, lay it flat on the wall, press the scan button and it is ready for calibration. When the wood, metal, and AC wires hidden are found, the intelligent micro-sensor chip will flash and beep. [Wide Application]This wall detector can work on different wall surfaces, such as lath, wallpaper wood flooring, acoustic ceiling, painted walls, etc. It helps you avoid danger when installing TVs, cabinets, garage racks, etc.