Aqara U400 Smart Lock: The Future of Home Security with UWB Technology
The smart home landscape has evolved dramatically, and the Aqara U400 smart lock represents a significant leap forward in home security innovation. Unveiled at CES 2026, this cutting-edge device combines Ultra-Wideband (UWB) technology with traditional smart lock features to create an unparalleled user experience.
What Makes the Aqara U400 Special?
UWB Technology: Unlike traditional Bluetooth or WiFi-enabled locks, the U400 uses Ultra-Wideband technology to detect your smartphone’s precise location. This means your door unlocks automatically as you approach – no fumbling for keys or even touching your phone.
Key Features:
- Ultra-Wideband (UWB) positioning technology for precise proximity detection
- Automatic unlocking when you’re within 30cm of the door
- Multiple authentication methods including fingerprint, PIN, and mobile app
- Military-grade AES-256 encryption for maximum security
- Up to 6-month battery life with USB-C emergency backup
- Compatible with Apple HomeKit, Google Home, and Alexa ecosystems
Installation & Compatibility
The Aqara U400 fits standard deadbolt installations and works seamlessly with existing smart home ecosystems. Setup takes less than 30 minutes using the intuitive mobile app.
Price & Availability
Launching Q2 2026 with an estimated retail price of $299. Pre-orders begin February 2026 through major retailers including Amazon, Best Buy, and directly from Aqara.
