The scale of "dirty" air is from 000 to 600. At home, I have never received a value below 003. But 003 is considered fine air, so it's all good. I live near the Leningrad highway, I expected to see polluting air, but no, the very first reading after turning it on was quite good. Had I known this, I might not have bought it. Some pros: Soundly made, for its dimensions it looks quite elegant. I connected to the 2022 MiHome without problems. Different cons: It goes crazy when the humidifier is running and it takes several hours for the purifier not to scream about the danger of the air due to the water suspension. This disadvantage is not related to this model or manufacturer, it's just a pity that the two necessary devices cannot work simultaneously.
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