It's a good thing, because I didn't think it was all that important. After airing out the apartment, the air quality lowers to 80-90 and the button turns red, despite the fact that it was previously very clean. (Everything that has happened is due to Togliatti's disastrous environmental predicament. The values are returned to their original 1–5 range after a few minutes of operation at the third speed. The program can be used without being installed, as all necessary controls can be found in a single button. Most importantly, he can buy one of three different types of filters that won't break the bank. Video critique from me:
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