The Leuze PRK 18/4 DL.4 is a high-performance retro-reflective photoelectric sensor designed for reliable object detection in various industrial automation applications. Part of the 18 series, it utilizes a visible red LED light source and a polarization filter, which ensures dependable detection even of shiny, reflective, or transparent objects while preventing false signals from stray light. Its robust M18 cylindrical plastic housing is rated IP67 and IP69K, making it suitable for harsh environments with exposure to dust, water, and high-pressure cleaning. The sensor features two independent PNP switching outputs (light/dark switching) and is easily configured via a teach button. Connection is made simple with a standard M12 connector, ensuring quick and secure installation.