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Aqara Smart Lock U400 vs Eufy Security Smart Lock S230

Full Smart Door Locks comparison in 2026

Updated June 2026
Data from Amazon and official Aqara and Eufy sites.
2026 verdict
Between Aqara Smart Lock U400 and Eufy Security Smart Lock S230, Aqara Smart Lock U400 is the better overall pick in 2026, leading on connectivity, integrations, and lock/unlock system. It wins the broader comparison through connectivity, integrations, and lock/unlock system, while its broader overall balance helps confirm the result. Eufy Security Smart Lock S230 can still be the right pick, but only if price, rating, and battery life outweighs the wider strengths of Aqara Smart Lock U400. That keeps the verdict firmly in favor of Aqara Smart Lock U400.
vs
FeatureAqara Smart Lock U400Eufy Security Smart Lock S230Winner
Price$269.99$159.99Eufy Security Smart Lock S230
Rating4.04.3Eufy Security Smart Lock S230
Battery Life6 months1 yearEufy Security Smart Lock S230
ConnectivityBluetooth, Thread Protocol, Other2.4 GHz WiFiAqara Smart Lock U400
IntegrationsGoogle Home, Alexa, Apple HomeKit, Home Assistant, MatterGoogle Home, AlexaAqara Smart Lock U400
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyRemote, Passcode, Fingerprint, Physical KeyAqara Smart Lock U400
Weather ResistanceIP65IP65Tie
One-Time PasswordYESYESTie
Periodic PasswordYESYESTie
Anti-peep PasswordYESYESTie
Emergency FingerprintNONOTie
DoorbellNONOTie

Frequently Asked Questions

Which is better overall: Aqara Smart Lock U400 or Eufy Security Smart Lock S230?

Aqara Smart Lock U400 has the stronger overall profile in this comparison, especially for connectivity, integrations, and lock/unlock system.

What is the biggest difference between Aqara Smart Lock U400 and Eufy Security Smart Lock S230?

Price is one of the clearest differences: Aqara Smart Lock U400 lists $269.99, while Eufy Security Smart Lock S230 lists $159.99.

Which one looks better on price?

Aqara Smart Lock U400 is listed at $269.99, while Eufy Security Smart Lock S230 is listed at $159.99. Eufy Security Smart Lock S230 (better spec).

Who should buy Aqara Smart Lock U400?

Choose Aqara Smart Lock U400 if your priority is connectivity and integrations and that matters more than price.

Who should buy Eufy Security Smart Lock S230?

Choose Eufy Security Smart Lock S230 if your priority is price and rating and that matters more than connectivity.

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