Product-Details: --Make-Your-Curtains-Smart-In-30-Seconds-Without-Any-Screws,-Nuts,-Or-Bolts-(U-Rail-Requires-Certain-Dimensions,-See-Figure-2) --Control-Your-Curtains-With-The-Switchbot-App,-Touch-&-Go,-Or-Remotely-Through-The-App-When-Using-Switchbot-Hub-Plus/Mini --Set-A-Timer-Or-Use-The-Light-Sensor-To-Open-Or-Close-Your-Curtains-For-Better-Sleep-And-Energy-Savings --Works-With-Smart-Assistants-Like-Amazon-Alexa,-Google-Assistant,-And-Siri-When-Used-With-Switchbot-Hub-Plus/Mini --Supports-Different-Track-And-Rod-Types,-And-Has-A-Rechargeable-Battery-That-Lasts-Up-To-8-Months-(Chargeable-With-Solar-Panel-Sold-Separately) --Comes-With-A-1-Year-Warranty --Easy-Installation-And-No-Need-For-A-Wired-System.