Breathe easier with the assistance of the Philips Humidifier Series 2000. With NanoCloud technology, the Philips Humidifier Series 2000 has natural evaporative technology, which prevents the spreading of bacteria into the air and prevents wet spots and white dust. Maintain a constant humidity level with the automatic humidity settings. Choose 40%, 50%, or 60% as your target humidity level and the humidifier will automatically turn on or off to reach the desired humidity level. It automatically shuts off when the water tank is empty and indicates on the display that a re-fill is needed. The quiet sleep mode ensures you can maintain your desired humidity level even when you're sleeping. Perfect for smaller rooms like a bedroom, nursery or home office.