the force of gravity in an embodiment an air flow sensor can comprise an anemometer the invention also provides for other types of air flow sensors to be used in an embodiment the invention provides for air temperature measurements of air flow so as to provide measurement data to the information system in an embodiment such an air temperature measurement can be made by employing an air temperature sensor in the area inside or just outside an air vent air temperature sensors can be implemented and networked in various ways for example as described in the preceding section in an embodiment the multi tap electrical bus can be of the same type as that used in one or more of the other types of measurements in an embodiment the multi tap electrical bus can be the same instance as that used in one or more of the other types of measurements the invention anticipates that a room can be provided with one or more airvents and that these air vents can be of a variety of types for example fig4 a depicts an exemplary passive air vent while fig4 b depicts an exemplary remote controlled air vent the remote control feature can be controlled directly by.