The SGP41 is Sensirion’s new VOC and NOx sensor designed as digital smart switch and regulation unit for air treatment devices such as air purifiers.

The two sensor signals processed by Sensirion’s powerful Gas Index Algorithm can be directly used to automatically trigger the removal of indoor air gas pollutants by air treatment devices without the need for user–device interaction. This sensor solution is thus well-suited for constantly monitoring the VOC and NOx situation including potentially harmful events which are not perceived by humans. Furthermore, an automatic control of air treatment devices based on the SGP41 signals helps to save energy by turning them off once the VOC and/or NOx events have been taken care off.

SGP41 offers a solution for two complete sensors on a single chip facilitating design-in and saving design costs. Thanks to its very small DFN package (2.44 x 2.44 x 0.85 mm³) the sensor can be designed into applications with limited spaces. SGP41’s multi-pixel sensing element features an unmatched robustness against contaminating gases which are present in real-world applications enabling unique long-term stability as well as low drift. Sensirion’s state-of-the-art production process guarantees high reproducibility and reliability. Tape and reel packaging together with suitability for standard SMD assembly processes make the SGP41 predestined for high volume applications.