You can simply ask Alexa to control your “air purifier”. After connecting Alexa to your products in a few simple steps: (1). Download our “EcozyHome” app in app market then register an account; (2). Configure our devices in our “EcozyHome” 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 “EcozyHome” skill from the "Alexa" app skills category; (5). Enable “EcozyHome” skill, and you'll be navigated to “EcozyHome” 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, turn on the air purifier.” “Alexa, turn off the air purifier.”