Efficient H13 True HEPA Filter Purification air purifier uses an H13 True HEPA filter and has many international certifications, such as CARB, FCC, ETL, etc.. It can easily filter air as small as 0.3 micron in the air, such as pet dander, hair and etc. With a coverage of up to 1800ft², the home air purifier powerfully refreshes the air in the room 5x per hour. Smart Air Quality Monitoring with Light The air purifiers for home large room are equipped with smart air quality sensor. It can intelligently detect the PM2.5 and display the value on the front panel. In addition, there are three color lights to reflect the surrounding air quality, good air quality (green), moderate (blue) and poor (red). Keeps you well informed about air quality. High-Efficiency Fan & Aromatherapy Diffuser The air purifier has 4 adjustable fan speeds.