System controller to be used to manage only on/off cycles for a system up to 16 groups / 64 indoor units, to be used in matching with other controllers (remote controllers, system controllers, etc.).

System controller to be used to manage and program a system up to 16 groups / 64 indoor units, with or without remote controllers; it can be matched with schedule timer and intelligent controller.

System Intelligent Controller to be used to manage and program a system up to 256 indoor units, organized in 4 groups of 64 units each, also without wired controllers; it can be matched with the schedule timer and in case of three/four-group installations it must be connected with the communication adapter.