Automatic zone selection may be provided by the zone splitters by the connection of normally-open contacts from the Fire Alarm Control Panel (FACP) or other auxiliary control system. An “ALL-CALL” Switch is provided which will select all voice evacuation zones for emergency paging. Individual LEDs are provided to annunciate zone status of either “Zone Active” or “Zone Fault”. All EVX-Series Zone Splitters are compatible with 25V and 70V voice evacuation system amplifier outputs.