Technical Review & Analysis
Revolutionize your home access with the Aqara UWB Smart Lock U400, the ultimate fusion of cutting-edge security, unparalleled convenience, and universal smart home compatibility. Experience true hands-free unlocking powered by Ultra-Wideband (UWB) technology, allowing you to enter your home seamlessly without lifting a finger – perfect for those moments when your hands are full or you’re caught in the elements. This isn’t just a smart lock; it’s your gateway to a more secure, integrated, and effortlessly controlled home.
The Aqara UWB Smart Lock U400 offers true hands-free entry with advanced UWB technology.
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True Hands-Free Unlocking with UWB Technology
Step into the future of home access with the Aqara U400’s groundbreaking UWB (Ultra-Wideband) technology. This intelligent system precisely detects your presence, direction, and intent as you approach, automatically unlocking your door for a truly seamless entry. It’s faster, more convenient, and exceptionally secure, eliminating the need to touch the lock – ideal for juggling groceries, wrangling children, or arriving in inclement weather. (Note: UWB unlocking requires a Thread-enabled Apple Home hub and is supported on Apple Watch Series 6 or later (excluding SE) running watchOS 11.5+ and iPhone 11 or later (excluding iPhone SE & iPhone 16e) running iOS 18.5+.)
Experience effortless entry with UWB, detecting your approach for automatic unlocking.
Versatile All-in-One Unlocking Options
Beyond its revolutionary UWB capability, the Aqara U400 provides a comprehensive suite of unlocking methods to suit every preference and scenario. Effortlessly unlock with a tap using Apple Home Key (requires a Thread-enabled Apple Matter controller: HomePod 2nd Gen, HomePod mini, or Apple TV 4K 2021/2022). Choose from a secure fingerprint scan, a convenient touchscreen passcode, voice assistant commands, remote app access, an NFC card (sold separately), or the traditional physical key. This multi-faceted approach ensures you always have a reliable way to enter your home.
Enjoy a wide array of unlocking options including fingerprint, passcode, and Apple Home Key.
Seamless Matter Over Thread Connectivity
Embrace true smart home integration with Matter over Thread. The Aqara U400 is engineered for robust multi-ecosystem compatibility, allowing it to connect to various smart home platforms simultaneously. Benefit from the enhanced performance of Thread, offering faster response times, more stable and reliable connectivity, reduced power consumption, and secure data transmission. (Note: A Thread-enabled Matter controller from each ecosystem is required for its respective platform.)
Matter over Thread ensures broad compatibility and reliable performance across smart home platforms.
Efficient Rechargeable Power System
Never worry about dead batteries again. The Aqara U400 is powered by a convenient, rechargeable, and removable lithium battery that provides up to 6 months of operation on a single charge. Recharging is simple via the integrated USB-C port, allowing you to power up without taking the lock offline, or you can remove the battery for separate charging. A clear low-battery voice alert will notify you when power drops below 20%, ensuring uninterrupted security and access.
Long-lasting rechargeable battery with convenient USB-C charging keeps your lock powered.
Certified Security and Outdoor Durability
Your home’s security is paramount. The Aqara U400 is BHMA-certified, guaranteeing proven protection, exceptional mechanical strength, and long-term reliability. Its robust exterior boasts an IP65 rating, providing superior protection against dust and water ingress, making it an ideal and durable solution for any entryway, even in challenging outdoor conditions.
BHMA-certified and IP65-rated for robust security and outdoor durability.
Sleek black finish complements any door aesthetic, enhancing both security and style.
