Take a deep breath with peace of mind when you use the MA-Smart Three-Filter Air Purifier. This medical-grade air purifier offers an easy color-coded system to let you know the exact quality of the air around you. The MA-Smart shows a green LED for excellent air, blue for good air, and red for air that is poor and needs attention. On auto, the MA-Smart gets to work by purifying your air. It has a three-filter design and a PM2.5 sensor to know when its job is done. The system automatically adjusts its fan speed to more efficiently purify the air. In addition, the MA-Smart works with a companion app so you can understand more about their air around you. As soon as the air is of better quality, the fan speed slows. Incredibly, the MA-Smart can effectively clear a 15-square-foot smoke chamber in only 35 seconds. For spaces up to 500 square feet, the MA-Smart is the smarter way to keep your air clean.