The Switching Unit is managed by the CSE Central Unit and is designed to house the zone modules for distribution of audio signals over 8 zones per each unit. Max. 10 Switching Units can be connected in sequence, for a total of 80 zones. Connections with the Central Unit are made with Cat.5 twisted-pair patch cords. All connections are monitored for integrity. The Switching Unit is provided with eight slots for insertion of zone modules, leds on front panel for immediate status display of each zone module, audio/data bus module for connection with Central Unit, extension connector for additional units, connection module for backup amplifiers, and 230Vac mains power module. Suitable to rack installation with Item KSA. Size: 3 r.u.