Unpleasant odors, volatile organic compounds, fine dust, pollen, viruses, and bacteria can deteriorate our air quality. The air purifiers Roger and Roger little show how the air quality is at home or in the office. With their sensors, they continuously measure the quality of the indoor air. The air quality indicator informs with a changing color when the air worsens. The dual filter combines HEPA and activated carbon filters. The HEPA filter efficiently cleans the air of pollutants, while the activated carbon filter skillfully eliminates unpleasant odors. With the auto mode, Roger and Roger little take on their role as household air improvers even more independently - the cleaning performance is adjusted to current needs.