Xiaomi Smart Air Purifier 4 adds negative air ionization that you

Science continues to debate the need for negative ions in indoor air purification systems, but we find that air cleaning works as well with Xiaomi’s latest air purifier when the ions are turned off

Xiaomi Smart Air Purifier 4 Series, Xiaomi Robot Vacuum Mop-2i Launched in India: Price, Specifications, Features

Where and how high should i place Xiaomi Air Purifier 4 Pro? (details in comments) : r/AirPurifiers

Air Purifiers: 8 to Consider in 2024

Xiaomi Smart Air Purifier 4 - Xiaomi Global Official

Purify 403 sq ft spaces 5x per hour and filter at least 99.97percent of 0.3-micron airborne particles with H13 True HEPA filtration. Newly added HEPA Smart Technology helps filter 99.99percent of bacteria and mold, as well as 99.9percent of viruses, to keep your home as healthy as possible. View the amount of airborne particles detected by the laser dust sensor on the PM2.5 display, while Auto Mode automatically adjusts the fan speed based on air quality.

Levoit PlasmaPro 400s Smart True HEPA Air Purifier - White

Acerpure Cool 2 in 1 Air Purifier and Air Circulator for Home with 4-in-1 True HEPA filter, Smart Sensor, Negative Ion Generator eliminates pollutants, germs and more,Safety Lock,25dB Quiet, AC551-50W