CO2 enrichment technique has been widely used in indoor growth enhancement. It has been proven that by increasing CO2 concentration during plant growth processes has yielded better efficiency and result. Today, CO2 monitoring along with temperature and relative humidity are the basic parameters to monitor and control in high-tech farming. Such environment is usually extreme with high humidity as spraying water is very common. Therefore, sensors with high IP protection rating housing and resistance to high humidity are recommended to ensure good measurements.
