IOT JOIN offers the most comprehensive English voice control of smart home devices through Alexa. Here are the specific binding steps: (1) Download app “IOT JOIN” at ios app store (2) Open app “IOT JOIN”, scan IOT JOIN Gateway QR Code to log in (3) Follow the prompts to bind smart home devices and rename them. Those names will be displayed in the later alexa app (4) Click on the top right corner manual of the app IOT JOIN, click on "Settings", select "IOT JOIN", remember the account and password (5) Open app alexa,search for "IOT JOIN" in the category "Skills" (6) Click to enable "IOT JOIN" and enter the account and password you remembered in the fourth step (7) After successful binding, return to alexa app,click to discover device (8) Now that all settings are complete, try to control your devices with Echo