1. Intelligent curtains opening and closing - Automate your existing blinds, shades, curtains in the simplest and most cost-effective way. Motor can set upper & bottom limit positions and limits can be saved even when power off. 2. Li-battery Charging: Built-in 2000mAh battery, Powered by charger(Power adapter is not included) ensures long time continuous working with the large battery capacity.Save more money and energy low power consumption. 3. Works with any plastic beaded chain or metal beaded chain that is looped. products are used in venetian blinds, vertical blinds, honeycomb blinds, blinds, roller blinds, soft gauze curtains, no need to disassemble the old curtains , and the installation is simple. Smart in seconds External WiFi Version Functional description: 1. App control / remote control 2. Timing switch 3. Temperature sensor off 4. Tuya scene mode 5. Control distance: 10 meters 6. Directly connect For , home, , Xiaodu, Xiaoai and other smart speakers 7. Battery: Built-in