The design mode of three sets in one body affords convenient application and less space occupation.

It can separately test high temperatures, low temperatures and constant temperature and humidity.

All systems are individual and independent. The three sets type of the refrigeration systems and three sets of the type heating and humidifying systems are adopted. The three set type systems afford stable control and high accuracy, prolonging the service life of machine parts.

All programmed instructions are microprocessor-controlled, with PID and automatic calculation to ensure precise and stable temperature and humidity control.