4010-6303 SIMPLEX 4120 MM-L DUPLEX FIBER MEDIA 4120 network communications among system fire alarm control panels provides: - Support for up to 99 nodes per network loop to provide network emergency voice broadcasts and centralized command center operations. - Multiple network loops for campus and other high panel quantity applications. - Network-wide initiation of alarm silence, acknowledge, and reset; and investigation of status and details of system points and point lists. - Distributed system operation to ensure excellent survivability; during a communications fault condition, Network nodes remaining connected will regroup and continue communicating. - Flexible network annunciator options such as TrueSite workstations, network display units (NDU) and NDUs with voice command center (VCC). - Use of InfoAlarm command center equipped nodes to provide increased network information display capability. - Network level command and control provides manual point control for on/off or disable/enable, as well as gathering specific point detail. Datasheet 4010-6303.