The Levoit Core 400S Smart True HEPA Air Purifier, is the high-efficiency air purifier to clean a whole room properly. AirSight Plus technology scans the surrounding air for airborne particles as small as 0.3um, this air purifier focuses on real-time home conditions - this is more than just having an air purifier. Levoit engineers designed the air purifier's internal structure to provide powerful air purification while maintaining noise levels as low as 24dB. 
Features:
LARGE COVERAGE: The top-performing Levoit Core 400S Smart True HEPA Air Purifier can purify large rooms, such as bedrooms, living rooms, kitchens, and basements. Purify a 403 ft² room 5x per hour and a 990 ft² room 2x per hour
3-STAGE FILTRATION: Filtration includes a Pre-Filter, H13 True HEPA Filter, which traps viruses, bacteria, pollen,dust, and pet dander, and a Custom High-Efficiency Activated Carbon Filter that helps neutralize odors, cooking and wildfire smoke, and VOCs
WHISPER-LEVEL QUIET: Keep the Core 400S running throughout the night, as Sleep Mode uses the lowest fan speed (24dB) to create a sleep-friendly space that’s as quiet as falling leave
COMBAT ALLERGIES AND ASTHMA: Powerful air purification during allergy and wildfire seasons helps capture allergens that cause sneezing, congestion, breathing difficulties, and other symptoms
VIEW AIR QUALITY: The laser dust sensor scans the surrounding air for airborne particles, continuously updating the PM2.5 display and creating graphs in the VeSync app so you can see how your air quality has improved
HANDS-FREE VOICE COMMAND: Hands-free control with Amazon Alexa and Google Assistant allows you to control settings when your hands are full with cooking, caring for babies and children, or playing with pets
SCHEDULE SETTINGS TO MATCH YOUR ROUTINE: Program the air purifier to use different modes and fan speeds at certain times, so you can have your week planned in advance. With scheduling, you never have to worry about forgetting to change your settings
TRUSTWORTHY AND SAFE: The Core 400S is Energy Star and FCC certified, ETL listed, and a recipient of the German Design Award (2021) and iF Design Award (2021). Only use Levoit replacement filters (search B08SQQK6K7) for best results and product performance