SCD40-D-R1 by Sensirion is a air quality sensors designed for reliable performance in electronic applications. It is widely used in industrial, automotive, and power management systems.

Sensor and transducer products facilitate the measurement or detection of physical processes and phenomena, often though not always by transforming them into an electrical signal of some format. Among others, products are available for the measurement of color, fluid level or flow, gas concentration, image detection, magnetic field, linear acceleration or rotation, vibration, light intensity, object presence, distance, temperature, mechanical strain, and others.