Brand capability
Smart-home access is moving from manual codes and app taps toward presence-aware door control.
Consumer Electronics
Aqara Smart Lock U400
Smart lock with UWB approach unlock, Matter support, Thread, Apple Home integration, and NFC.
Why This Product Is Here
Smart-home access is moving from manual codes and app taps toward presence-aware door control.
Brand Evidence
What Aqara Smart Lock U400 shows about Aqara.
Product behavior
It puts UWB approach unlock at the center instead of treating the phone as only an app remote.
User fit
Smart-home users who want hands-free entry and already understand platform setup.
Product Overview
Aqara Smart Lock U400 is built around no-touch entry, using UWB approach unlock while keeping Matter, Thread, Apple Home, and NFC in the smart-home stack.
What It Is
A smart lock for households that want proximity-based entry and platform integration.
What Stands Out
It puts UWB approach unlock at the center instead of treating the phone as only an app remote.
Best For
Smart-home users who want hands-free entry and already understand platform setup.
Not For
Doors that do not fit the lock hardware, households without backup access planning, or users who want a simple offline deadbolt.
Before You Check It
Confirm door fit, compatible devices, hub needs, backup access, battery routines, and guest permissions before going further.
Smart-lock reliability depends on installation, supported phones or watches, household rules, and emergency backup access.
Platform support can vary by region and smart-home ecosystem.
Brand
AqaraReference Price
Check official retail links
Check the official page for regional reference price, bundle details, and availability.
smart-locksmart-homematterconsumer-electronics
Consumer Electronics Details
Product type
Smart lock
Core feature
UWB approach unlock with smart-home platform support
Compatibility
Matter, Thread, Apple Home, and NFC support; confirm regional device and hub requirements
Key Facts
Access
UWB approach unlock positioning
Smart-home support
Matter support with Thread positioning
Apple ecosystem
Apple Home integration
Backup access
NFC support
Selection Notes
Visual Detail
Smart lock with UWB approach unlock positioning, Matter support, Thread, Apple Home integration, NFC support, and non-biometric access positioning.
Brand Context
Aqara makes smart-home automation feel more precise through presence sensing, hubs, and device-level routines rather than simple remote control.
Brand Identity
Aqara is a China-founded smart-home brand with global official product channels.
Brand Profile
Open the public brand page for Aqara.
Sources
Aqara product page
aqara.com
Used to verify
U400 identity, UWB unlock positioning, Matter, Thread, Apple Home, NFC, and product imagery.
Aqara support
aqara.com
Used to verify
Owner-support context for setup, compatibility, and smart-home troubleshooting.
Connectivity Standards Alliance Matter context
csa-iot.org
Used to verify
Matter ecosystem context for smart-home compatibility expectations.
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