Sick UK 1018252 W12-2 laser rectangular photoelectric proximity sensor with metal housing. The WL12L-2B530 sensor features PNP/NPN output type and light/dark switching mode. Reliable object detection of small objects due to superior ASIC (application-specific integrated circuit) technology combined with innovative laser technology. Red light laser technology provides quick and easy alignment of sensor. Rugged metal housing (available with Teflon coating) withstands harsh environments. Resistance to optical interference reduces false readings and downtime. Rotatable connector provides easy installation. The W12L-2 series of photoelectric sensor features laser technology that is optimally designed for individual applications. These sensors provide reliable object detection, fast response times and are enclosed in a rugged metal housing, which is ideal for use in all types of industrial applications.