The SICK WL23-2P1130 is a versatile, short-range multifunctional light grid designed for diverse detection, positioning, and basic measurement tasks. It consists of a compact transmitter and receiver pair that create a dense, invisible infrared curtain of light. It detects objects that interrupt one or more of these light beams, making it perfect for monitoring larger areas or detecting objects with complex shapes that might be missed by a single-beam sensor.