You can simply ask Alexa to control your air purifiers , Such as: pureAir Active HEPA+. After connecting Alexa to your products in a few simple steps: (1). Download our GreenTech Connect app in app market then register an account; (2). Configure our devices in our “GreenTech Connect” app and change appropriate name for your devices; (3). Download Amazon "Alexa" app from android, IOS or Amazon app market then configure Echo with "Alexa" app; (4). Search GreenTech Connect skill from the "Alexa" app skills category; (5). Enable GreenTech Connect skill, and you'll be navigated to GreenTech Connect login page; (6). Follow the instructions on the page to complete linking; (7). Now all setup is finished. You can enjoy the voice control on your home devices like these: "Alexa, set purifier to Auto Mode."
"Alexa, set purifier to fan speed 5."
"Alexa, set purifier to Night Mode."