1. Remove bad smell, eliminates dusty, smog. keep air fresh 2. Ozone Sterilization function, Inhibit the growth of bacteria, remove the bad smell. Remove bad smell, eliminates dusty, smog. keep air fresh; And to kill a variety of bacteria; Degradation of pesticide residues. 3. Low noise, low consumption 4. Smart design with Led indication, LED brightness: 10-20Lux at night. 5. Has light sensor control Led lights, it can used as the night lamp 6. Used in kitchen ,room and toilet. 7. This machine can change to Negative ion Function .