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Door Locks · Head to head

Aqara Smart Lock U300 vs Eufy Smart Lock C33

Full Smart Door Locks comparison in 2026

Updated September 2026
Data from Amazon and official Aqara and Eufy sites.
2026 verdict
In 2026, the recommendation leans toward Aqara Smart Lock U300 over Eufy Smart Lock C33, driven by weather resistance, battery life, and connectivity.
Aqara Smart Lock U300
Winner
Aqara Smart Lock U300
$189.99
Buy on Amazon USACheck price
The comparison tilts its way because of weather resistance, battery life, and connectivity, with integrations and Lock/Unlock system keeping it in front. Eufy Smart Lock C33 still makes sense if price and rating are your priority, but most buyers should still lean toward Aqara Smart Lock U300. Overall, Aqara Smart Lock U300 makes more sense for most people.
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FeatureAqara Smart Lock U300Eufy Smart Lock C33Winner
Price$189.99$129.99Eufy Smart Lock C33
Rating3.64.1Eufy Smart Lock C33
Weather ResistanceIPX4IP53Aqara Smart Lock U300
Battery Life10 months8 monthsAqara Smart Lock U300
ConnectivityBluetooth, Thread Protocol, Other2.4 GHz WiFiAqara Smart Lock U300
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Home AssistantAqara Smart Lock U300
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyRemote, Passcode, Fingerprint, Physical KeyAqara Smart Lock U300
One-Time PasswordYESYESTie
Periodic PasswordYESYESTie
Anti-peep PasswordYESYESTie
Emergency FingerprintNONOTie
DoorbellNONOTie

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Aqara Smart Lock U300
  • Eufy Smart Lock C33

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Frequently Asked Questions

Which is better overall: Aqara Smart Lock U300 or Eufy Smart Lock C33?

Aqara Smart Lock U300 has the stronger overall profile in this comparison, especially for weather resistance, battery life, and connectivity.

What is the biggest difference between Aqara Smart Lock U300 and Eufy Smart Lock C33?

Price is one of the clearest differences: Aqara Smart Lock U300 lists $189.99, while Eufy Smart Lock C33 lists $129.99.

Which one looks better on price?

Aqara Smart Lock U300 is listed at $189.99, while Eufy Smart Lock C33 is listed at $129.99. Eufy Smart Lock C33 (better spec).

Who should buy Aqara Smart Lock U300?

Choose Aqara Smart Lock U300 if your priority is weather resistance and battery life and that matters more than price.

Who should buy Eufy Smart Lock C33?

Choose Eufy Smart Lock C33 if your priority is price and rating and that matters more than weather resistance.

Full comparison table

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  • 44 Door Locks
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