Features: Timed opening and closing: According to your own living habits, set the timing to open and close the curtains to help get better sleep. Slide the phone to control the opening and closing ratio: Whether at home or out, you can check the curtain status through the Mijia APP and control the opening and closing ratio of the curtains. For remote control of curtains, it needs to be used with a device with Bluetooth mesh gateway function. Large capacity battery: With the built-in 6400mAh high-density lithium-ion battery, the endurance time is up to 6 months. Compatible with various tracks: Support mainstream rail types on the market: the U-shaped track and I-shaped track. Easy Installation: This smart curtain opener makes your curtains smart without the need for screws, nuts, or bolts. Just hang and use. Specifications: Item Name: Mijia Smart Curtain Opener Main Material: ABS Battery: 6400mAh Rated Current: 1.5A Rated Voltage: 5V Rated Torque: 0.2N m Input Power: 7.5W Working System: S2 4min Output Speed: 100r/min Insulation Class: Class A Moving Speed: 1.2cm/s Wireless Connection: BT Mesh Protection Level: IP20 Operating Humidity: 0~95% RH, no condensation Operating Temperature: 0C~45C Color: White Size: 140.5*96*44mm Package Information: Package Size: 18*12*5cm Package Weight: 500g Package List: 1 * Smart Curtain Opener 1 * USB Charging Cable 1 * Manual