Wrappers apply protective film wrap around packaged containers of product. SICK offers a wide range of solutions for wrapper machines. Photoelectric sensors detect the position of containers before they enter a wrapper. On shrink wrappers, sensors confirm the container is in the correct position, determine that the correct number of containers are available for the bundle and perform other quality assurance procedures. Retro-reflective and diffuse photoelectric sensors determine pallet presence, height, and wrap presence or completion on stretchwrappers. After the products are wrapped, sensors may be used for edge detection for pallet overhang.