Feature:1. [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.2. [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.3. [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.4. [Wide Application] Suitable for curtains in any room, including bedrooms, living rooms, offices, nurseries, and more, offering convenience and automation throughout the home.5. [Energy Efficient] This eco friendly device is easy to use, saves electricity, and conserves energy, promoting sustainability and cost effectiveness.Specification:Item Type: Automatic Curtain OpenerMaterial: ABSSpeed: 10m/sMotor Power Supply: 3.7V 4000MAH lithium ion battery x 1 (built in)Supported Track Types: U shaped track, I shaped trackApplicable U Shaped Track:Bottom Slotting Width: Approx. 0-15mm / 0-0.59inBottom Ring Width: Approx. 0-5mm / 0-0.20inApplicable I Shaped Track:Bottom Slotting Width: Approx. 5-40mm / 0.20-1.57inBottom Ring Width: Approx. 0-5mm / 0-0.20in.Package List:1 x Automatic Curtain Opener1 x USB Cable1 x User Manual1 x Screwdriver2 x Brackets1 Pack x Accessories