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 or True HEPA PRO Filtration system removes 99.97% (HEPA) or 99.99% (HEPA PRO) of airborne contaminants as small as 0.3 microns.