How can I stop heating/cooling a room if there is an open window?

In the By-me system, it is sufficient to create a group with: relay actuator, thermostat, one or more interfaces for traditional switches and a magnetic contact NC (placed on the window in question) connected to the interface. When the contacts open, the interface sends an OFF signal to the relay, and closure will reactivate it (if the thermostat allows it). If the climate zone is that of the control unit area (with 2-module control units), you must first create the group with the relay, associate that group to the climate zone of the control unit area, and then add the interfaces to the same group as the relay.