LHH25 series digital the constant temperature does the hand implement adopt personalization design , makes use of a microprocessor to satisfy the figure constant temperature technology under the control of ,regardless of in any season in 1 year, whose air outlet temperature will be constant keep in 65 ~C, have the continuous work 60 seconds of queen automation closing down function. Do the hand implement job be over at every time queen, the electric fan is able to continue blowing a cold wind over, to reduce the body spare time temperature generating heat, 2 seconds of queen close a power source voluntarily. The product has the efficient characteristic of forceful , dry hand of wind power , is fit to wait for crowd in the factory , hotel , market specially, concentrated public place is put into use.