A carbon dioxide sensor is a machine used to detect the concentration of carbon dioxide. Carbon dioxide is one of the raw materials for photosynthesis of green plants, and 95% of the dry weight of crops comes from photosynthesis. Therefore, the use of carbon dioxide sensors to control the concentration has become an important factor affecting crop yield. Carbon dioxide is a colorless, odorless gas that is one of the most important components of the atmosphere. As the main reactant of photosynthesis, carbon dioxide concentration is directly related to the photosynthetic efficiency of crops, and determines the growth, maturity, stress resistance, quality and yield of crops.

