ACAMS Products The Core Product Airfield Lighting Control MET Info Display NavAid Status Monitoring CAT III Status Monitor ATIS Publications Maps Directories AFTN Display Direction Finder Time Syncronisation & Display Tower Cabin Lightning Control Sun Shade Control Video Surveillance Entrance Control Notice Board Internal Messaging External Message Display Conversion Calculator Data Logging External Alarm ACAMS Related Products		External Alarm The ACAMS Alarm module performs monitoring of miscellaneous external equipment which is of importance for tower operations. For example, UPS systems, intruder detector and voice logger alarms. The ACAMS system interfaces to the external equipment alarms via a PLC subsystem which is connected to a dualised Ethernet network. The display software runs as separate programs on each client PC and communicate directly with the PLC.