The circulating LED lighting indicates the level of pollution in the air, which is measured via the PM2.5 sensor. In automatic mode, the fan level 1-8 regulates itself up and down based on this measurement. The air pollution level is indicated in the range 0-500, which corresponds to the particle load in ug/m3 at a ratio of 1:4.

0-79: very good or good

(There is little or no health risk).

80-119: moderate

(Air quality is acceptable, there is a health risk only for a few very sensitive people).

120-159: poor

(There is a health risk for all persons sensitive to air pollution).

160-500: very poor

(Air quality is potentially hazardous to the health of all persons).

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