The master switch actuator is driving the complete system with up to 72 channels using extension modules. The master actuator already includes 8 channels 10A. It allows to configure switching, shutter or blind function on any of the channels. Advanced logic functions are included.

The SAE-816 Switch Actuator Extension allows for the configuration of switching, shutter, or blind functions on any of the 8 channels. Each channel is rated at 16A and features two screw terminals, facilitating the connection of multiple wires. Additionally, very low power consumption is achieved through the use of bistable relays. This extension module is designed to be used in conjunction with the KNX master module.

The HAE-805 Valve Control Extension is a modular component for KNX systems that adds 8 channels for valve control functions, featuring integrated temperature controllers that can operate as ON/OFF, PWM, or temperature controllers. This extension module is used together with the KNX master module.