The MH-Z16 carbon dioxide gas sensor is a general-purpose, small sensor that uses the non-dispersive infrared (NDIR) principle to detect CO₂ in the air. It exhibits excellent selectivity, is oxygen-independent, and has a long lifespan. It features built-in temperature compensation and offers both digital and waveform outputs for ease of use. This infrared sensor is a high-performance device that combines mature infrared absorption gas detection technology with precise optical path design and sophisticated circuit design.