Field Controls Trio-1000P Trio Portable Air Purification System Four stages of filtration, including HEPA, trap dust, dander, pollen, and other airborne particles High intensity UVC germicidal lamp neutralizes and reduces airborne mold, bacteria, and viruses PRO-Cell catalytic grid transforms odors and VOCs into fresh, breathable air Advanced electronics monitor and communicate system operation VOC sensor automatically increases the fan speed when harmful gases are present