Keys are Obsolete - Aqara Smart Lock U400

Quick Overview

The Aqara Smart Lock U400 successfully demonstrates hands-free unlocking using Ultra-wideband (UWB) technology with an iPhone, instantly unlocking as the user approaches the door, effectively making keys obsolete for primary access.

Key Points: The Aqara Smart Lock U400 supports hands-free unlocking on approach using UWB technology, with demonstrated accuracy down to 100 cm. The presenter successfully installs the lock, noting that unlike previous models, this installation does not require drilling new holes in the door frame for the latch strike plate. The lock supports multiple access methods including UWB approach unlock, Apple Wallet, up to 50 fingerprints (with 0.3-second recognition speed), and a capacitive keypad. The UWB feature is currently available for iPhones, but Aqara claims future support via the Matter/Aliro Standard is planned for Android phones. The presenter highlights that the lock's removable, rechargeable battery allows for charging while still installed via a USB-C port on the exterior plate. The lock integrates with smart home ecosystems like Apple Home, Samsung SmartThings, Home Assistant, and Google Home via Matter over Thread. The price point mentioned for the lock is $269.99 USD.

Context: The video is a sponsored hands-on review and installation guide for the Aqara Smart Lock U400, focusing on its cutting-edge UWB 'unlock on approach' feature, which aims to replace traditional keys. The presenter unboxes the lock, details the components, demonstrates the installation process on an existing door, and tests the keyless entry features, including UWB, fingerprint recognition, and smart home integration.

Detailed Analysis

The video showcases the installation and features of the Aqara Smart Lock U400, sponsored by Aqara. The presenter begins by unboxing the lock, noting the inclusion of necessary hardware and a template for setup. He points out that the installation is designed to be straightforward, requiring the removal of the old deadbolt but often not requiring new drilling for the strike plate, unlike some older smart locks. Key components shown include the exterior keypad unit, the interior battery/motor housing, the latch mechanism, and the rechargeable battery pack. The presenter demonstrates installing the latch mechanism and the internal mounting plate, emphasizing the importance of correctly orienting the latch so the bevel faces the door closing direction. After installation, the device is paired via the Aqara Home App using a QR code scan, and fingerprints are enrolled, with the presenter noting a 15-second window for enrollment. The standout feature, UWB unlocking, is tested successfully: as the presenter walks toward the door with his iPhone, the lock automatically unlocks (indicated by a green UWB light), which is noted as being more secure and accurate (within 1 meter) than standard Bluetooth proximity unlocking. The presenter also shows the emergency backup: the removable battery can be charged via USB-C without removing the entire unit from the door, and a hidden physical key override slot is present under a small door on the interior assembly. The lock supports Matter over Thread, allowing integration with various ecosystems like Apple Home, Google Home, and Amazon Alexa devices for voice control routines, such as locking all doors upon leaving.