Each optic sensor has a dedicated Air Purge Unit that supplies positive air pressure from the optic enclosure to help reduce any grease or dirt accumulation on the optic lens. The system also performs a daily calibration to adjust the optic sensitivity based on the level of cleanliness. If the optic lens gets too dirty, the system will visually alert the user to clean the optic lens. This video provides an overview about the system's optic sensors, as well as troubleshooting tips.