Features [Versatile Compatibility] Our automatic curtain opener is compatible with U shaped and I shaped curtain rails, ensuring versatility and ease of use in a variety of settings. [Easy Installation] Simply install this smart curtain opener without the need to alter the track or use any tools, allowing for an effortless upgrade to intelligent curtain opening and closing. [Quiet Operation] Working at less than 25dB, this motor operates quietly, providing a peaceful environment without disturbance. Ideal for individuals with sleep disorders or sensitivity to noise. [Energy Efficient] This eco friendly device is easy to use, saves electricity, and conserves energy, promoting sustainability and cost effectiveness. [Wide Application] Suitable for curtains in any room, including bedrooms, living rooms, offices, nurseries, and more, offering convenience and automation throughout the home. 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 How to Use: Follow the instructions in the manual to operate the product. packing list: 1 x Automatic Curtain Opener 1 x USB Cable 1 x User Manual 1 x Screwdriver 2 x Brackets 1 Pack x Accessories Package List 1 x Automatic Curtain Opener 1 x USB Cable 1 x User Manual 1 x Screwdriver 2 x Brackets 1 Pack x Accessories