Bluetooth performance was acceptable to strong in short-range use, with minimal latency and stable connections reported despite general reservations about Bluetooth smart-home devices.
Pros: Lock/unlock speed, Fingerprint
Cons: Keyway quality, Wi-Fi
Best Aqara Home Products for Bluetooth
Narrow by product type
Showing Home Products only. Switch back to all Smart Locks anytime.
Narrow by brand
Showing Aqara only. Switch back to all brands anytime.
Bluetooth is a backup and low-power option, but reviewers consistently preferred Zigbee or hub-based connections for faster, steadier response.
Pros: Access logs, Value and Price
Cons: Warranty and support, Wi-Fi
Bluetooth-only use was judged weak for this lock because reviewers saw the U400's main value in Thread/UWB rather than basic Bluetooth operation.
Pros: Locking reliability, Lock/unlock speed
Cons: Bluetooth, Physical attack resistance