The Datalogic TLu is a high-resolution contrast sensor designed for automation and process control engineers who need reliable, high-speed detection of registration marks and contrast variations on fast-moving production lines. Operating across packaging and labeling machinery, printing machinery, and beverage, food, cosmetic, and pharmaceutical manufacturing environments, the TLu delivers switching frequencies up to 20 kHz for precise mark detection at line speed. Red/green LED (526 nm/630 nm with automatic selection) or white LED (400–700 nm) emission options accommodate a wide range of target materials and surface finishes. Setup is straightforward via a two-step teach-in procedure using front-panel push buttons or remote wire inputs, with up to four settings storable in non-volatile EEPROM memory. An IP67-rated ZAMA metal housing with interchangeable glass lenses and a rotatable M12 connector or cable exit ensures reliable integration into demanding industrial installations.