The ICU602 control unit processes all protocols and information for all Luminator displays, including destination display, route number and stop information - no matter which generation of device is in use.

Automatic messages such as "Next stop" displays and voice announcements are controlled by the odometer or (optionally) triggered by GPS. Driver announcements are possible inside and outside the vehicle - e.g. for passengers waiting at a stop. The control unit fits into any standard radio slot (ISO 7736) and is equipped for use under tough conditions with an IP-classified front with dust and water protection. Optionally, the rear side can also be IP-classified.

In addition to GPS reception, ICU602 has an Ethernet option and the option of connecting to an on-board gateway. Using the network connection, the back office can send current information or software updates of the displays and devices on-board. Diagnostic information is automatically sent to the control center allowing for easy and efficiency troubleshooting and maintenance.