Air temperature and humidity are important factors in the preservation of foods such as vegetables and fruits. In addition, meat and meat products are among the food products affected by the humidity and temperature of the environment.. The relative humidity of the environment should be kept between 90-95% in order to protect the vegetables and fruits. Below these values products decrease in weight and their appearance deteriorates.In dairy products, the environment in which the product is located must be above 95% relative humidity. The risk of spoilage of dairy products kept at the ideal humidity level is reduced.Regarding the preservation of meat in meat products, it should be ensured that the cooling rooms are moistened and the red color is preserved without further addition of nitrates. HAVKON humidity & temperature sensors and control devices provide accurate and reliable control in the measurement and control of the humidity values of the environment where vegetables, fruits and meat products are located.