Roger Big provides clean air in conference rooms, open-plan offices and large spaces of up to 1100-sq. ft. With its two sensors, the mobile room air purifier continuously measures the quality of the air and immediately detects pollutants such as unpleasant smells, volatile organic compounds (VOCs), pollen, fine dust, viruses and bacteria. If the air quality deteriorates, the air quality indicator lets you know by changing colour. If the intelligent auto mode is also activated, Roger Big's cleaning performance will be adjusted automatically. The more polluted the air, the higher its chosen level of performance will be. The well-designed air purifier also has two washable, textile pre-filters as well as an integrated sanitized hygiene function. At the heart of the air purifier are two filters which are a combination of a HEPA filter and an activated carbon filter.