Door Locks · Head to head

Aqara Smart Lock U400 vs Level Lock Pro

Full Smart Door Locks comparison in 2026

Updated June 2026
Data from Amazon and official Aqara and Level sites.
2026 verdict
In 2026, the recommendation leans toward Aqara Smart Lock U400 over Level Lock Pro, driven by price, weather resistance, and connectivity. It wins the broader comparison through price, weather resistance, and connectivity, while Lock/Unlock system and One-Time password help confirm the result. Level Lock Pro is still relevant if you care most about rating and battery life, but Aqara Smart Lock U400 is the stronger recommendation overall. For most setups, Aqara Smart Lock U400 is the smarter buy.
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FeatureAqara Smart Lock U400Level Lock ProWinner
Price$269.99$349.00Aqara Smart Lock U400
Rating4.04.1Level Lock Pro
Weather ResistanceIP65IPX4Aqara Smart Lock U400
Battery Life6 months1 yearLevel Lock Pro
ConnectivityBluetooth, Thread Protocol, OtherBluetooth, Thread ProtocolAqara Smart Lock U400
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyRemote, Bluetooth, Passcode, NFC Tag, Apple Home Key, Physical KeyAqara Smart Lock U400
One-Time PasswordYESNOAqara Smart Lock U400
Periodic PasswordYESKeypad requiredAqara Smart Lock U400
Anti-peep PasswordYESNOAqara Smart Lock U400
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
Emergency FingerprintNONOTie
DoorbellNONOTie

Frequently Asked Questions

Which is better overall: Aqara Smart Lock U400 or Level Lock Pro?

Aqara Smart Lock U400 has the stronger overall profile in this comparison, especially for price, weather resistance, and connectivity.

What is the biggest difference between Aqara Smart Lock U400 and Level Lock Pro?

Price is one of the clearest differences: Aqara Smart Lock U400 lists $269.99, while Level Lock Pro lists $349.00.

Which one looks better on price?

Aqara Smart Lock U400 is listed at $269.99, while Level Lock Pro is listed at $349.00. Aqara Smart Lock U400 (better spec).

Who should buy Aqara Smart Lock U400?

Choose Aqara Smart Lock U400 if your priority is price and weather resistance and that matters more than rating.

Who should buy Level Lock Pro?

Choose Level Lock Pro if your priority is rating and battery life and that matters more than price.

Full comparison table

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