The present invention is directed to a humidity controlling ventilator which takes in air through the use of an air blowing fan, and controls the humidity of the taken air via an adsorption heat exchanger prior to supplying it to the room. The node may initially have no functionality or may have default functionality and may be able to take on different functionality in the graphical program, depending on configuration user input received. In one embodiment, the primary audio data and the voice feedback data are initially analyzed to determine a loudness value.