Analog Master Module
Annunciator Display Panel
MULTY Synchroniz Module
Control Module
Serial Interface Module
Esacontrol DER-741 Board
DER740 Digital Exchange Repeater
Standard Timer Module
Clock Module
Computer Interface Module
PC Interface Module
MCS Keyboard Interface
Memory Module
ISBX SCSI Interface Board
MCS CPU Module
Bailey Management Command System Keyboard
Alarm Panel Module
Annunciator Display Board
MCS Connection Board
