Dyson's most advanced filtration system combines a precise, solid-state formaldehyde sensor with a catalytic filter that continuously destroys formaldehyde. What it does: The purifier automatically senses, captures, and traps pollutants for cleaner air.Features and benefits:- Detects and destroys formaldehyde released from household items.- Air Multiplier technology generates the circulation power to draw distant pollutants into the machine, projecting purified air throughout the whole room.- 360° filtration system uses a HEPA filter to capture 99.97% pollutants as small as 0.3 microns.- Choose between Fan mode for direct cooling with your choice of 0 to 350° oscillation and Backwards airflow mode to purify without cooling.- Acoustically engineered to reduce turbulence, so it's 20% quieter than the previous model. - Control and monitor your air quality from anywhere using the MyDyson app.- In Night mode, the machine monitors and purifies using the quietest settings, with a dimmed display.- Program your machine to turn off after pre-set intervals between 30 minutes and 8 hours.- Safe and easy to clean with low maintenance, easy-to-replace filters. With automatic filter-life notifications on the LCD screen.- Curved and magnetized remote stores neatly on top of the machine.- Energy Star Certified- Awarded the Parent Tested Parent Approved seal of approval. The Seal of approval families trust. Third party full machine testing based on GB/T 18801-2018 formaldehyde cumulative clean mass testing with continuous injection until plateau of formaldeyde CADR is achieved. Results may vary in practice. In maximum setting. Tested for air projection (DTM801) and purification coverage in a 2860ft3 room (TM-003711). Requires device to run app, Wi-Fi or mobile data, Bluetooth 4.0 support, and iOS version 10 or Android version 5 (or above). Standard data and messaging rates may apply. Particle challenge by DEHS oil specified in EN1822 within a chamber specified in ASTM F3150.