In 2005 I recieved an assignment to place an alarm panel in an unsecured space to be monitored by uncleared personnel that would still conform to the DOD5200 specifications.
I designed this system that would light up a light when an alarm occured in the Vindicator system being monitored. This system provided a communication interface that gives the operator the ability to acknowledge, but not secure alarms.
I started the design in February, completed the schematics and firm ware in March. The system was completed shipped and installed in August
The system utilized a Rabbit Microcontroller like this: SBC BL2100