The WLG is a retro-reflective light grid with a 100 mm detection height and transmission 8 LEDs. Detecting damaged pallets, leading edge detection, checking the edges of material webs and detecting and sorting bottles are the typical areas of application of the WLG. At the same time, depending on the set sensitivity, the WLG detects objects which are only 6 mm large at a distance of 0.4 m. Transparent objects and reflective surfaces are also reliably detected.