The DK50-UV luminescence sensors detect marks such as inks, pigments, dyes, coatings and adhesives, even on irregular backgrounds, and deliver a luminescence sensing range of 600 mm. These sensors are UL and cUL listed and feature up to four automatic teach modes and one manual teach mode. Additionally, the DK50-UV features a graphical, eight-segment LED display that indicates luminescent signal strength, an output mode toggle and an integral timer that allows slower controllers to react to sensor output.