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Quick verdict
The U400 is Aqara's Matter over Thread deadbolt, so lock, unlock, PIN codes and schedules reach Home Assistant locally with no Aqara hub. Fingerprint and NFC credentials, door position and logs don't come across over Matter, and auto-lock lives in the Aqara app. UWB hands-free unlock is an Apple feature that needs an Apple home hub. I run a U400 on my front door; I haven't published a review of it yet.
Standout: A Matter over Thread deadbolt with UWB hands-free unlock, Home Key, fingerprint and keypad, charged over USB-C without removing the battery.
Notes last checked Nov 6, 2026.
Compatibility snapshot
Home AssistantgoodReliable local integration with minor caveats (a hub, manual config, or polling). Core function works locally.
Apple HomegoodWell supported, with only minor gaps.
Google HomegoodWell supported, with only minor gaps.
AlexagoodWell supported, with only minor gaps.
Works offlineyes
Setuphard
Extra hub neededno
Powerrechargeable battery
Local control facts
Matter: certified (csa-iot.org, checked Nov 7, 2026)
Matter over Thread lock that Aqara says works with Home Assistant, Apple Home, Google Home, Alexa and SmartThings without an Aqara hub
UWB hands-free unlock and Apple Wallet Home Key, plus fingerprint, keypad codes, NFC card and a mechanical key
rechargeable battery rated up to 6 months that charges over USB-C indoors without removing it
Reasons to hesitate
over Matter, Home Assistant gets PIN codes and schedules but not fingerprint or NFC credentials, door position or event logs, per Matter Survey
UWB hands-free unlock needs a supported iPhone or Apple Watch and a Thread-enabled Apple home hub
auto-lock and Night Latch are configured in the Aqara Home app rather than over Matter
Best for
Home Assistant houses with a Thread border router that want local lock control and Apple Home Key
replacing a single-cylinder deadbolt with keypad, fingerprint and phone unlock
Avoid if
you need fingerprint or NFC enrolment managed from Home Assistant
you have no Thread border router
Privacy and local-control notes
Lock and unlock run over Matter over Thread, so Home Assistant controls the lock on your own network through a Thread border router. Settings such as auto-lock and Night Latch are set in the Aqara Home app.
Home Assistant support: supported · integration path: matter.
Buying reality check
Price notes: The black lock is the Amazon listing I track; Aqara also sells it in silver.
One verified price read so far: $269.99 at amazon on Nov 6, 2026.
Aqara US product page (Matter over Thread; works with Apple Home, Home Assistant, Google Home, Amazon Alexa, SmartThings with a Thread-enabled Matter controller; UWB unlock needs a Thread-enabled Apple home hub; Home Key, fingerprint (up to 50), passwords, NFC card, mechanical key; rechargeable battery up to 6 months, USB-C indoor charging; IP65 outer panel; BHMA; single-cylinder deadbolt fit; auto-lock and Night Latch in Aqara Home app; models DL-D06E/DL-D16E lock only) · checked Nov 6, 2026
CSA certification (CSA25G1YMAT49048-24, 12/16/2025, VID 0x115F PID 0x2804, Thread and Bluetooth, Matter 1.4, device type 0x000A door lock) · checked Nov 6, 2026
Matter Survey (seen 1,969 times; Thread; Door Lock supports PIN, User, Aliro, schedules; Finger, RFID, Door Position, Logging, Unbolt not supported; rechargeable battery reported. Quality stays good (core lock/unlock and PIN codes work locally, matching U200/U300 ratings) despite these credential gaps) · checked Nov 6, 2026
