CoRui WiFi Switch Smart Garage Door Opener Controller Work With Alexa Echo Google Home EWelink APP Control No Hub Require Description: Remotely open the garage door for trusted people when there's nobody at home. Remotely control the gorage door when you back home soon. Simply control your garage door via eWelink APP Works perfectly with Alexa,Google Home. Device Sharing: You can share it to your family and friends or visitors, OF COURSE, you can take back the permissions at any time. History Record: You can check the garage door opening or closing history records on your APP to ensure the safety of your garage. Specifications: Plug modelUSBplug is not include Shell material: ABS Wireless Standard: IEEE802.11b/g/n Wireless Type: Only 2.4GHz, not support 5G Rated current: 5V 1A Working with: Amazon Alexa, Google Home Mobile Phone APP: eWelink for Android & IOS Package Included: 1 x WiFi Smart Switch Garage Door Opener 1 x Instructions with 4pc Stickers Notes: The device requires a 2.4 GHZ WIFI connection and can be installed quickly and easily without the need of a professional. It is compatible with almost all garage door openers (check the site that is compatible with the opener).