Come with with Wifi Adaptor, U rail, I rail & Roman Rail accessories Battery : 1-2 months (Just need to charge 2 hours for full charge) Battery indication : You can check from the curtain motor, if red light blinking it means battery is weak Please check the size before purchase Roman rod : 15 - 30mm diameter U Rail : 6mm > width > 14mm , Height > 4mm I Rail : 6mm > width > 14mm , Height > 12mm Automate most type curtain (rod and rail type), with Tuya or SmartLife App - No screws, easily Install.  - The most affordable motorized curtain solution. Don't waste your curtain, retrofit it. - Voice control your curtain with Alexa, Google Home, and Siri, with Hub Mini. - Smart, automated and healthy lifestyle, enabled. - Practical and useful for high ceiling curtains, elderly, and disabled people. - Energy saving - Suitable for I rail, U rail and Roman Rod (Please check details) - Suitable for less than 5m curtain track (each Curtain robot) length and 7.5kg curtain - Control by apps or remote controller