The Holmes WAP532 TrueHEPA Smart WeMo Enabled Air Purifier uses a True HEPA filter to remove 99.97% of particles as small as 2 microns from the air. It features an air quality sensor which can automatically adjust the air purifier to one of three settings based on the surrounding air quality. 

Using the WeMo app on your mobile device you can control your air purifier as well as other WeMo appliances. The app can notify you about the air quality and allows you to set custom schedules for air purifier operation. Filter change reminders also include a quick link for filter replacement purchases.