The Aqara U200 Lite Kit is a retrofit smart lock designed to upgrade your existing door's security without replacing the entire lock mechanism. It provides multiple keyless entry options and integrates with modern smart home ecosystems through Matter-over-Thread. This kit includes the main lock unit and a wireless keypad for flexible installation and use.Key Features:- Retrofit Installation: Mounts onto your existing indoor thumb-turn cylinder, making it compatible with a wide range of doors without altering the exterior hardware.- Multiple Access Methods: Unlock via the wireless keypad using fingerprint recognition, numerical passcodes, or the included NFC cards. App-based control is also available.- Matter-over-Thread Connectivity:Offers reliable, fast, and local smart home integration with compatible hubs. This protocol reduces reliance on cloud services for core functionality.- Auto-Lock and Local Storage: The lock can automatically secure the door after a set period. All sensitive data, including fingerprints and passcodes, is stored locally on the device for privacy.