Every Compose™ PLC system requires the use of a Firewall™. The Compose™ PLC Firewall™ links all of the devices in the system and ensures reliable, predictable, performance. The Firewall™ also allows you to expand your lighting control system anytime you like.

• Required with every Compose™ PLC system
• Built-in RS232 interface (for use with CPLCOMM option)
• Optional time-clock
• Optional relay card