The SICK WTB12-3P2411 is a compact background-suppression photoelectric proximity sensor with infrared light and PNP output, offering a versatile sensing range from 20 mm to 600 mm. Equipped with a 5-turn potentiometer for adjustment, fast switching performance, and housed in a rugged metal enclosure rated to IP66/IP67/IP69K, it is designed for reliable detection in demanding industrial applications.