With the EcoTimer you transfer an individual time program to the controller FKS, WKS and WFS. The app establishes a Bluetooth connection with the controller. If the room control unit has been recognized by the app, it is possible to rename the controller device as well as create weekly recurring time program for each day and to transfer the settings to the room control units. The app enables the time-dependent control of the operating states "Off", "Eco" and "Comfort". The comfort temperature is set via the setting of the rotary knob on the room control unit. In the Eco function, this temperature is lowered by a value freely selectable via the app. In the "Off" mode, only the frost protection is active, which ensures that a room temperature of 7 °C is not undershot. Furthermore, the already written time programs can be read out and adapted by the room control unit.