Smart LocksBuying guide
Best Fingerprint Door Locks
Compare fingerprint deadbolts by reader configuration, backup entry, door fit and credential management, with sourced feature limitations.
PRODUCT INTELLIGENCE / SMART LOCKS
Aqara Smart Lock U400
Documented capabilities. Clear regional context.
AQARAAqara Smart Lock U400Sourced product information
The model at a glance.
- Source market
- US / Canada / Australia / New Zealand / Singapore
- Last verified
- 2026-10-05
- Evidence
- Manufacturer specifications · research analysis
Check door compatibility, access methods, connectivity, battery and ecosystem compatibility. Controller, border-router and hub requirements vary by function; keep a reliable backup access method.
DOCUMENTED PRODUCT COMPARISON
Compare Aqara Smart Lock U400.
See how Aqara Smart Lock U400 stacks up against other documented products in the same category.
- Key specifications and technology
MANUFACTURER CLAIMS / NOT INDEPENDENT TEST RESULTS
Published specifications.
- Lock type
- Single-cylinder deadbolt
- Door compatibility
- Single-cylinder deadbolt doors; use supplied strike plate
- Installation
- Full replacement deadbolt
- PIN
- Yes; one-time and recurring codes
- Fingerprint
- Yes
- NFC
- Yes; home key and Aqara NFC card
- Physical key
- Yes; mechanical key
- Matter
- Yes; compatible Matter platform / Thread border router
- Thread
- Yes
- Apple Home
- Yes; compatible Thread-enabled Apple hub
- Google Home
- Yes; Matter
- Alexa
- Yes; Matter
- Battery
- Rechargeable Li-ion; up to 6 months per charge
- Emergency power
- Third-party power bank
- Auto-lock
- Yes; built-in gyroscope
- Weather/IP rating
- IP65
Check the documentation.
Verified 2026-10-05 · Source market: US / Canada / Australia / New Zealand / Singapore. Product features, bundles, availability and prices can change. Reference prices are dated manufacturer listings, not live offers or inferred MSRP.
RobotMyHome has not physically tested this model. Unlisted values are omitted, not assumed. Confirm the exact regional model, door or installation fit, accessories and local support before purchase.
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