This module is used to control a ventilation system. Thanks to this module the ventilation control can also utilize the ""all off"" function and the calendar functions from your Niko Home Control installation. Using the programming software, you set when, how long and at which level the ventilation will work. By pushing the buttons on the module, you can also operate the ventilation manually. The module is equipped with three feedback LEDs and one status LED and uses very little energy."