Features: Extremely Easy to Use -- Connect the smart robot to your phone via BT, and set schedule/timer on app to automatically open your curtains at sunrise and close at sunset, with 7 days programmable. You can also manually control the robot to totally open, half open, and close your curtains on phone. Smart Sensors -- Equipped with ambient light sensor and temperature sensor, the robot can be set up to automatically close the curtain when it detects your room temperature exceeding 25, luminosity over 30%. Temperature can be set within 10-60, and light intensity can be set within 10-90%. Remote & Voice Control -- Use voice commands like ''Draw/withdraw the curtain'' to control the curtain robot by adding a smart hub/controller to make it compatible with/replacement for Amazon Alexa, Google Assistant, T-mall Genie, etc. And it enables you to remotely close the curtains from miles away on phone when going out to protect your furniture, pets, aquarium from sunlight exposure. Easy to Install -- Simple to install, no tools required, which only takes you about 30 seconds to finish. Different types of robot for you to choose, suitable for I-rail curtain track, U-rail curtain track, and curtain rod (please confirm the size of your curtain track before purchase). Super Long Battery Life -- With built-in 4000mAh lithium battery, the smart curtain motor can last about 6 months if it closes/opens twice a day, without the hassle of frequently recharging it. Note: *Please confirm the size of your curtain track before purchase. *Smart hub and gate way are required for the feature of voice control and remote control. Specifications: Material: ABS Color: White Suitable Curtain Track Type: T-track(I-rail) / Inside grooved(U-rail) / Curtain rod (optional) Rated Power: 1W Motor Voltage: 5V Rated Torque: 3kg Speed: 20 seconds/meter Movable Distance: maximum learning distance is 20 meters Battery Capacity: 4000mAh lithium battery USB Port: 5V, 1A, Type-C Stand-by Power Consumption: 600A Work Time: about 6 months if open/close twice a day Item Size: 11.3*6.5*5.1cm / 4.44*2.55*2in Item Weight: 216g / 7.61oz Package Size:17.8*19*6.5cm / 7*7.48*2.55in Package Weight:710g / 25.04oz Packing List: 2 * Curtain Robot 2 * USB Cable 1 * User Manual