You can activate Sleep mode either through the app or by pressing the Sleep button on the device. In this mode, the purifier operates quietly at 20.5 dB, and the display light is dimmed.
Philips Smart Air Purifier which purifies rooms up to 36 m² - AC1711/63
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The Philips Smart Air Purifier 1000i series, comes with best in class filtration of 99.97% down to 0.003 microns. This device is equipped with many convenience features like Real time AQI display, filter life indication and is super energy efficent (consumes only 27 W)

Thoroughly purifies rooms up to 36 m2
It distributes powerful clean airflow to every corner of the room at a CADR (Clean Air Delivery Rate) of 300 m3/h, purifying rooms thoroughly and protecting you from bacteria, virus, pollen, dust, pet dander, dust mites, harmful gases, odors and other pollutants. The system cleans 20 m2 in just 10 minutes. (1)

Low energy consumption
Thanks to its energy efficient design, the air purifier runs at max. 27 W power. This is equivalent to an incandescent light bulb. It is compliant with a highly efficient grade of strict global standard..

Professional grade sensor for intelligent purification
The professional grade AeraSense sensor accurately scans the air 1000x a second to detect harmful pollutants and intelligently chooses the right speed for every environment. It displays the air quality in real time, showing level of allergens and PM2.5 in numerical form, as well as with an intuitive color ring.