The MH-V1512B 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 features excellent selectivity, is oxygen-independent, has a long lifespan, built-in temperature compensation, and offers both digital and PWM outputs for ease of use. This high-performance sensor is created by tightly integrating mature infrared absorption gas detection technology with precise optical path design and sophisticated circuit design.