智能风扇的设计，实现四种工作状态的转换。另设置自动功能按键，由温度控制风扇的工作状态，切风扇速度可设置也可以调节-Smart fan design, the realization of four state of the conversion work. Another automatic function keys, by the temperature control of the work of the state of the fan, cut the fan speed settin