Sensirion CO₂ sensors enable accurate and reliable measurements in a wide range of concentration areas and applications.


From minimum sizes to the maximum measuring range: the wide range of CO₂ sensors for monitoring indoor air quality is the perfect solution to your requirements.


PASens® Technology is based on the photoacoustic measurement principle, which allows extreme miniaturization. Thermal conductivity technology is used for high CO₂ concentrations.

CMOSens® Technology

Start testing today: Sensirion's plug and play CO₂ evaluation kit.