Features: When you are away from home, with this curtain motor and the Tuya APP, you can control the curtain by your mobilephone, no longer need to worry about forgetting to open or close the curtains in time. You are free to set your travel limit and stop wherever you want, and the maximum travel is unlimited, give you a better using experience. The worm-turbo self-locking brake device is adopted to ensure reliable brake and quiet when using. This product is the direct current power supplys curtain motor, which is safety and reliable. Voice control: With this curtain motor and the voice assistant like Alexa and Google Home, you can achieve to control your curtain by your voice.