Smart Control via App & Alexa: Use Alexa to activate your smart air purifier, or turn it off remotely via GoveeHome App while away from home, making your life smarter and more efficient. Compatible with Alexa, Google Assistant, and IFTTT. Auto Mode: The sensor in the air purifiers for pets hair detects air quality and auto-adjusts the purification speed based on the air quality. It will stop running when the air quality is excellent for 30 min, saving you more energy. 4-Stage Filtration: The air purifier for home large room contains H13 HEPA filter and 30% more carbon. Decompose peculiar smell and filter particles such as PM 2.5 more efficiently. The washable pre-filter reduces clogging and extends filter life by 6-8 months. Breathe Fresh Air: Certified by Energy Star, ETL, FCC, and CA65, cleans a 198 sqft room 5 times an hour and a 991 sqft room once an hour. Quiet Sleep Mode: With an operating sound as low as 24 dB and a display light on the Air Purifier for wildfires, you can enjoy the uninterrupted fresh air while you sleep. Plus, turn on the pet lock for extra peace of mind.