Purelle is the world's first Thread-enabled Apple Home smart air purifier that combines powerful air purification and smart capabilities. It works with Apple HomeKit using Thread technology, the latest future proof wireless protocol for the smart home. With a thread-enabled Apple Home hub, you can control your Purelle using your iOS devices anytime, anywhere. Its advanced 3-Stage True HEPA Filtration system removes 99.97% (H13) or 99.99% (H14) of airborne contaminants down to 0.3 microns. Key Features Works with Apple HomeKit & Full Thread Device Exclusive smart controls within the Sleekpoint App Touchscreen control panel with child lock High-precision pm2.5 sensor and real-time display H13/14 True HEPA 3-Stage Filtration System Sleep-friendly noise level as low as 23dB Multi-color air quality indicator Filter life indicator