SCD4x CO2 Sensors

Sensirion has profound expertise in miniaturizing sensors, which has enabled a breakthrough step in CO₂ sensing. With dimensions of just 10.1 mm x 10.1 mm x 6.5 mm, the SCD4x footprint has been miniaturized by a factor of 5 compared to its predecessor, the SCD30. Using the photoacoustic sensing principle, the dimensions of the optical cavity are drastically reduced without compromising sensor performance. Moreover, the SCD4x CO₂ and RH/T sensor leverages Sensirion’s outstanding environmental sensing expertise by incorporating a high quality humidity and temperature sensor that delivers two additional sensor outputs. Because of its unmatched size and its unprecedented price-to-performance ratio, the SCD4x is the sensor of choice for today’s and future CO₂ sensing markets such as IoT, automotive, HVAC, appliances, and consumer goods.

Thanks to new energy standards and better insulation, buildings have become increasingly energy-efficient, but at the cost of accelerated deterioration in air quality. Since high CO₂ levels compromise human health and productivity, CO₂ is a key indicator of indoor air quality. Air exchangers and smart ventilating systems in the commercial and the residential sector use CO₂ sensors to regulate ventilation in the most energy-efficient and human-friendly way. Furthermore, CO₂ sensors play an essential role in indoor air quality monitoring and can, therefore, be integrated into IAQ monitors, air purifiers, and smart thermostats. The SCD4x miniature CO₂ and RH/T sensor solution will revolutionize product design approaches and create the foundation for a vast array of new applications.