Description: Easy to InstallSmart Automatic Curtain Opener is easy to install and can be used anytime you hang it. No need to change the track, make traditional curtains quickly intelligent, and make curtains open and close intelligently.TimerSmart Curtain Opener has a timer function, you can set the timer to open and close the curtains according to your daily routineWidely UsedElectric Curtain Robot suitable for Roman Rod Track (Roman Rod diameter range: 13-38mm), U shaped Track (bottom slot width 0-15mm, bottom ring width 0-5mm), T shaped Track (bottom width 5-40mm, bottom ring width 0-5mm)FunctionSmart Curtain Opener has the functions of hand pull start, light opening and closing, and temperature closing. You can adjust the opening and closing ratio of the curtains at will.Low Power ConsumptionHome Smart Automatic Curtain Opener runs with low power consumption to solve your charging troubles. The charging time is 8 hours, and 1 charge can last for 6 months Specification: Product speed: 10m/sProduct color: whiteBattery capacity: 4000mAhendurance: 6 monthsCharging time: 8 hoursMaterial: ABS Size Chart: 20.5cmx13cmx7.6cm/8.07inchx5.12inchx2.99inch Package Includes: 4x T shaped accessories, 4x U shaped accessories, 2x Roman rod curtain machine, 1x distant control Note: Please allow slightly errors 1-2cm differences due to manual measurement.