The IAQPoint is a three-on-one monitor for Indoor air quality that accurately measures the carbon dioxide (CO2), temperature and relative humidity levels throughout buildings. It sends this information to the control system or building automation system (BAS) that will activate the demand controlled ventilation just in the areas where the CO2 or temperature or humidity levels exceed recommended standards. This contributes to save energy and gain LEED points. The IAQPoint comes in an analog version with a 4-20mA output and also in a digital version supporting BACNet (MS/TP), LON and Modbus. This allows the IAQPoint to connect with almost any BAS presently available in the market.