The air meter is a valuable aid when it comes to both setting air conditioning and ventilation systems and assessing indoor air quality. A multifunction measuring instrument enables you to determine important climate parameters, such as CO₂, air humidity, air temperature and absolute pressure, reliably and precisely. A measuring instrument of this kind goes far beyond a classic hygrometer which is purely for the determination of humidity. The possibility of connecting a variety of optional probes enables different climate factors to be determined.