E the internal temperature effectively. 4. Water supply system that is externally connectable, convenient for refilling water into the humidifying pot and automatically recyclable. 5.French tecumseh is used as compressor, with environment friendly refrigeration r232 or r404a 6. Lcd display screen, capable of displaying the measured value as well as the set value and time. 7. The control unit has the functions of multiples segment program editing, with quick or ramp rates control of temperature and humidity. 8. casters are provided for ease of mobility, with strong positioning screws. Vices: fuse free switch, overloading protection switch for compressor, high and Wooden case