With the SCD4x, Sensirion offers a miniaturized CO₂ sensor with SMD compatibility that enables cost-effective integration with maximum freedom of design. It has a wide output range from 0 – 40,000 ppm and a base accuracy of 50 ppm ±5% of measured value. A wide supply voltage range and a fully calibrated digital I²C output facilitate sensor integration. Further, the integrated relative humidity and temperature sensor offers on-chip signal compensation, thus retaining high accuracy when experiencing temperature and humidity changes. Additionally, the measured relative humidity and temperature are output via I²C. The combination of compactness and high accuracy is achieved thanks to Sensirion’s PASens® technology.