... application:greenhouse,building venlitaion systems MH-Z14 NDIR Infrared gas module is a common type, small size sensor, using non-dispersive infrared ... design and sophisticated circuit design. MH-Z14 NDIR Infrared gas module is applied in the HVAC, indoor air quality monitoring, industrial ... , agricultrue and animal husbandry production process monitoring. infrared co2 sensor module