The Xiaomi Smart Air Purifier 4 Pro Filter is engineered to provide comprehensive air purification through a three-layer filtration system. The first layer is a **primary filter** that captures large particles such as dust, pet hair, and lint, preventing them from reaching the subsequent filtration stages and ensuring the longevity of the filter. The second layer features Xiaomi's proprietary **High-Efficiency Filter**, which combines electrostatic and mechanical filtration technologies to remove 99.97% of airborne particles as small as 0.3 microns. This includes pollutants like PM2.5, pollen, pet dander, and smoke. The third layer is a **high-quality activated carbon filter** containing 650,000 mg of activated carbon, designed to adsorb odors and harmful gases such as volatile organic compounds (VOCs), formaldehyde, and cooking fumes, thereby maintaining a fresh indoor environment.
This filter is compatible exclusively with the Xiaomi Smart Air Purifier 4 Pro and is designed for easy replacement, with the Mi Home/Xiaomi Home app providing timely reminders based on usage. The recommended replacement interval is every 6 to 12 months, depending on usage conditions. The filter's dimensions are approximately 275 mm in width, 275 mm in depth, and 680 mm in height, with a weight of around 1.3 kg. Its efficient design allows for low noise operation (as low as 33.7 dB in Night Mode) and reduced energy consumption, making it an ideal choice for maintaining clean air in medium to large-sized rooms.
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