Sensirion’s profound expertise in miniaturizing sensors has enabled a breakthrough step in CO2 sensing: with dimensions of just 12 x 12 x 7 mm3, the SCD40 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 on sensor performance. Moreover, the SCD40 CO2 and RH/T sensor leverages Sensirion’s outstanding environmental sensing expertise by incorporating a best-in-class humidity and temperature sensor that delivers two additional sensor outputs. Because of its unmatched size and its unprecedented price-performance ratio, the SCD40 is the sensor of choice for today’s and future CO2 sensing markets such as IoT, automotive, HVAC, appliances and consumer goods.