Feature: 1. [Easy Installation] Upgrade your traditional curtain to smart curtain effortlessly without the need to change tracks or use tools with this automatic curtain opener. 2. [Versatile Compatibility] This smart curtain opener supports U tracks and I tracks, ensuring versatility in installation options for different window configurations. 3. [Quiet Operation] Operating at less than 25dB, the motor ensures a slow and quiet curtain movement, eliminating disturbances, ideal for those with sleep disorders or sensitivity to noise. 4. [Remote Control Convenience] Connect this smart curtain opener to mobile APP for remote control, allowing you to effortlessly open and close your curtain on your smartphone. 5. [Suitable for Any Room] Ideal for bedrooms, living rooms, offices, nurseries, and more, this smart curtain controller provides convenience and automation for any room. Specification: Item Type: Automatic Curtain Opener Material: ABS Speed: 10m/s Motor Power Supply: 3.7V 4000MAH lithium ion battery x 1 (built in) Supported Track Types: U shaped track, I shaped track Applicable U Shaped Track: Bottom Slotting Width: Approx. 0-15mm / 0-0.59in Bottom Ring Width: Approx. 0-5mm / 0-0.20in Applicable I Shaped Track: Bottom Slotting Width: Approx. 5-40mm / 0.20-1.57in Bottom Ring Width: Approx. 0-5mm / 0-0.20in. Package List: 1 x Automatic Curtain Opener 1 x External WiFi 2 x Bracket 1 x USB Data Cable 1 x Instruction Manual 1 x Screwdriver 6 x Accessories