Ft. with HEPA Pure Air Filter, UV-C Light & Air Quality Sensor, 12", AC3000B, Black. ENERGY-SAVING ECOMODE: on Auto, when Airsafe+ detects an Air Quality Index (AQI) under 10, it goes into Ecomode; in Ecomode, the unit cycles between an ultra-quiet state for 30 minutes followed by 5 minutes on Speed 1 to circulate air and read AQI.
eBay