 Mi Air Purifier 4Xiaomi Mi Air Purifier 4 Air Purifier is compact and luxurious. Elegant white color but exudes sophistication. The product is suitable for spaces with an area of less than 50m2.  High-precision SensorsPM 2.5 sensor to monitor air pollutants fine particles  Negative Ion GeneratorNegative ions helps clean the air and makes you feel like in a forest or nearby a waterfall, which improves emotional well-being.  Purification AreaArea efficiency: 130m2 per hour  High Efficiency FilterPCADR 400m3/h & FCADR 150m3/h, eliminate 99.97% of pet dander, dust, pollen, smoke, TVOC and fine particles as small as 0.3 microns (less than one percent of a hair diameter).  OLED Touch ScreenThe Xiaomi Mi Air Purifier 4 Air Purifier owns an intelligent dust sensor that detects dust, temperature and humidity in the Air and displays details on the modern OLED screen. If the screen appears green, the fine dust concentration is safe, orange is dangerous and red is dangerous.  Improved filtrationXiaomi Mi Air Purifier 4 is significantly improved in filtration performance compared to the predecessor. The machine has a filtration speed of up to 380 m3 / hour and works effectively in rooms with an area of less than 50m2.  Smart Control
 Quiet OperationOperation noise is as low as 32.1dB, just like whispering that leaves you to sleep undisturbed
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