The new Philips Air Purifier Series 4500i has been specifically designed for your interior. It is an efficient, elegant solution to reduce allergens, harmful gases, and PM2.5. An intelligent sensor detects even the slightest changes in the air and automatically adjusts the speed to achieve optimal cleaning performance. The air purifier features four specially developed automatic modes: general mode, allergy mode, gas mode, and a powerful mode. For even more well-being in your home. With a particle CADR (Clean Air Delivery Rate) of 400 m³/hour, it cleans the air in a 20 m² room in less than 8 minutes. The air purifier is based on the enhanced VitaShield technology and removes 99.97% of particles down to a size of 0.003 μm (800 times smaller than fine dust), including fine dust, pollen, dust, and pet hair, as well as bacteria and viruses. It ensures that you breathe healthy air even during seasons of high air pollution. With a specially developed, highly sensitive allergy mode, this device effectively detects and reduces allergens such as pollen. Certified as allergy-friendly by ECARF (European Centre for Allergy Research Foundation). The numerical real-time fine dust display and the index for harmful indoor gases and allergens make invisible air visible, so you always stay in control. Supported by a tested fine dust quality sensor, the device provides real-time feedback on indoor air quality. The precise and modern gas sensor also detects harmful gases and displays their values. The color ring offers an additional visual indication from blue (good) to red (bad) to represent the air quality in the room.