A monitoring device for a harvesting machine comprises at least one sensor that is designed for generating a signal containing information on the noises caused by harvested crop material as it passes through a crop processing assembly. The multi-application cards are realized by portable device technologies, such as, smart cards or pocket-sized computer devices, and have the ability to store and activate a traveler’s permit for transportation and other travel services; as well as a monetary value for electronic payment means. At least one electrical connector extends through a wall of the lens, with one end provided inside the cavity and connected to the LED board, and another end disposed outside the cavity and connected to a power source.