The Cellular on Bus Module (COB) enables the installation of a cellular communication module outside the Control Panel along the system bus, allowing flexible positioning of the cellular module for optimal cellular signal level. The COB is an interface board, on which either 2G or 3G modules can be plugged. For installations up to 30m from the panel, the COB can be mounted in the B5 Box (RP128B5) or inside a LightSYS Polycarbonate Box (RP432B). For distances greater than 30m from the panel, separate power supply is needed. The LightSYS Polycarbonate Box (RP432BP) can be used with respective power supply and backup battery. COB is compatible with LightSYS as of version 5.92 and ProSYS Plus as of version 1.2.1.17.