The Link Shades Wifi Controlled Smart Blackout Shade works with Amazon Echo, IFTTT, and iOS, and Android web app. It runs on a 12v DC Plug In. (60" W x 72" L, Blackout White). Wifi Controlled Smart Shade. No Hub Needed. It's compatible with Amazon Alexa. Search for the Link Shades App in the Alexa App Store. Control your Shades easily through Voice Command. You can use the Link Shades Web App to create schedules for your shades by Day and Time. Control your Smart Shades on command through your phone. Use the Wall Control Box to move the shades when Smart Phone or Voice are not easily accessible.