di-soric optical contrast diffuse sensors are featured by a reliable detection of print marks on different carrier foils like labels, foils, banderoles, cardboard or tubes. Differences in contrast of 4 % or more are reliably detected at a distance of 30 mm. Thanks to the short response time of 0.2 milliseconds, di-soric contrast sensors are suited to be used in fast-moving processes. Start-up is user-friendly either by using the teach key or the the remote teach function. The sensors are working with white light and are characterised by a sturdy casing and a high protection class.