Product Information: 4 Speed Setting : Tmer Setting:12h Fiter Replacement Reminder : Sleeping Mode Double Air Quality Sensor for your choose Remote Control PM2.5 Digital Display : Manual and Auto Operation Modes 220V-50Hz,45W : Noise:=60db CADR:220m3/h : Utilization Area:50-80m3 PM2.5 removal Rate:=99 : AC motor Negative Ion:3 million pcs/cm3 : Air flow:250m3/h