The respiratory temperature regulator (thermostat) is a second-generation protective equipment developed by our company for workers in places with severe air pollution such as sandblasting, spraying, and industrial and mining environments. The working principle is to filter compressed air and connect it to the air inlet through a gas pipeline. The air is then rapidly rotated and divided into cold and hot air, with a temperature of up to ± 25 ℃. The temperature inside the protective suit can be adjusted within the range of 50 ℃, which can help workers resist the cold in winter and eliminate stuffiness in summer. It has high comfort and greatly improves the working conditions of workers. It can be used all year round.