Digital co2 sensor with high quality made up of mature infrared absorptiongas detection technology, precision optics design. Digital co2 sensor with high quality MH-Z14 NDIR Infrared gas module is a common type, small size sensor, using nondispersive infrared (NDIR) principle to detect the existence of CO2 in the air, with good selectivity, non-oxygen dependant, long life. Built-in temperature ...