 The maximum length of cable used on a C-Bus network is 1000 metres; however this is easily extended using C-Bus Network Bridges.Up to 100 units can be installed on a C-Bus network and this can also be extended using Network Bridges.The maximum number of C-Bus networks in one installation is 255 (note that this limitation does not apply if a C-Bus Ethernet Interface is utilised, the system size is then limited to IP Addressing only).