The SICK WL12-3N2431 is a compact retro-reflective photoelectric sensor featuring autocollimation (no reflector required), visible red LED illumination, and precision optics for reliable detection up to five meters. It offers fast, complementary NPN light/dark switching output in a rugged metal housing with M12 connector and includes full electrical protection and washdown-grade IP66/IP67/IP69K sealing, making it well suited for demanding industrial environments.
