This smart motorized curtain track system has a built-in Wifi connection. Without additional parts, it can be configured to control via mobile apps, Amazon Alexa, and google home devices. With easy installation, you can automatically control your curtains by remote control, timer, wall switch, or your mobile/tablets. It brings you modern smart home automation and is good for everybody to use (especially for those disabled persons). Smart FeaturesThe smart electric curtain track system can be quickly and easily installed. Open or close them from your smartphone, tablet, or remote control. Adjust them whenever you like, or set a schedule in the app to automatically adjust them according to your day. Built-in Wifi connection. Without additional parts, it can be configured to control via mobile apps, Amazon Alexa, Google Home and IFTTT devices. Specifications power source: AC 110-240VMax curtain track size 300 centimetres (98 inches). Can cover up to 3.14 meters together with the end bases on the track ends. Combining multiple motors in groups works with Amazon Alexa, google home, and IFTTT devices.