PM 2.5 Display & Air Quality Sensor』: Equipped with an infrared PM2.5 sensor, our AIRJOWSET air purifier can monitor the air quality in real time and reflect it to the display screen. When the air purifier is in Auto mode, the air purifier responds to changes in air quality. If the air becomes hazy, the display will turn yellow or red and the fan speeds up for faster work. It’s perfect for eliminating wildfire smoke and provides real-time air health updates. 『High Efficiency & Powerful』: Our air purifier is specifically designed to purify large rooms in your home, including spacious living rooms, bedrooms, and basements. With Turbo Air Technology and a 360°inlet, it can thoroughly cleanse up to 1290 square feet of space every hour. 『H13 HEPA Filters & 4-Stage Filtration』: Our air purifier has a pre-filter that catches larger particles like hair and pet dander, and a H13 HEPA filter that catches very small particles like dust and pollen. The activated carbon layer absorbs cooking and pet odors, making the indoor air fresher. Enjoy the benefits of a multi-layered filtration system for efficient and effective work. 『Super Silent Partner』: When operating in sleep mode, our AIRJOWSET pet hair air purifier for the bedroom runs with a low-speed fan that produces minimal noise (less than 22dB), and all indicator lights are switched off. This ensures that it won't disturb your peaceful sleep, allowing you and your family to breathe fresh and clean air while enjoying sweet dreams. Investing in this quiet sleep partner is definitely worthwhile. 『Timer & 4 Fan Speed』: Easily schedule the air purifier's operation time using the built-in timer or the Smart Home Life APP. Set it to run for 1 to 12 hours, according to your needs. And his hepa air purifier has 4 adjustable fan speeds, You can select the Fan Speed according to the air quality. The higher the wind speed, the better working efficiency. 『Official Filters & Multiple Filter Choice』 :Search for B0CRK9L2Q8 to find AIRJOWSET's official replacement filter. Select from 2 replacement filters to effectively meet your needs. There is original filter and the pet filter. The Pet Filter aids in catching pet dander and absorbing unpleasant odors.