App & Voice Control: Connect the air purifiers for home to App for features such as power on/off, sleep mode, timer, fan speed, and filter change reminders. The KF-P34 is compatible with Alexa and Google Assistant. Control your device without lifting a finger High Circulation Rate for Large SpacesWith a CADR of 205 CFM / 350m³/h, the KF-P34 quickly purifies air in a variety of room sizes: 398 ft² room 5x/hour, 1000 ft² room 2x/hour, and 2000 ft² room 1x/hour. Ideal for living rooms, bedrooms, offices, kitchens, and more.