Ultra-quiet and low power consumption: DC fan operation mode with maximum power of 25W. Unique sleep mode, only about 30 decibels, just like whispering, is very suitable for infants, the elderly and light sleepers; The silent fan balances the room temperature by rapidly introducing fresh air and bringing out sultry air. Unique environmental protection mode: the circulating fan intelligently senses temperature, and the wind speed changes with temperature. When the room temperature in the setting