Door Locks · Head to head

Eufy FamiLock S3 vs Eufy Video Smart Lock S330

Full Smart Door Locks comparison in 2026

Updated October 2026
Data from Amazon and official Eufy site.
2026 verdict
For most buyers in 2026, Eufy FamiLock S3 is the safer pick over Eufy Video Smart Lock S330 because of warranty and integrations.
Eufy FamiLock S3
Winner
Eufy FamiLock S3
$349.99

Last recorded price

Buy on Amazon USA
Its strongest advantages show up in warranty and integrations, with its broader overall balance helping widen the gap. The only strong reason to choose Eufy Video Smart Lock S330 is if rating and Lock/Unlock system are more important to you than the overall verdict. As a general recommendation, Eufy FamiLock S3 comes out on top.
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FeatureEufy FamiLock S3Eufy Video Smart Lock S330Winner
Rating4.04.1Eufy Video Smart Lock S330
Warranty1.5 years1 yearEufy FamiLock S3
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Home AssistantEufy FamiLock S3
Lock/Unlock SystemRemote, Passcode, Physical KeyRemote, Passcode, Fingerprint, Apple Home Key, Physical KeyEufy Video Smart Lock S330
Price$349.99$349.99Tie
Weather ResistanceIP65IP65Tie
Battery Life4 months4 monthsTie
Connectivity2.4 GHz WiFi2.4 GHz WiFiTie
One-Time PasswordYESYESTie
Periodic PasswordYESYESTie
Anti-peep PasswordYESYESTie
Emergency FingerprintNONOTie
Winner
Eufy

Eufy FamiLock S3

Prime exclusive deal
$349.99

Last recorded price

Buy on Amazon USA
  • + Warranty: 1.5 years
  • + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
  • - Rating: 4.0 vs 4.1
  • - Lock/Unlock System: Remote, Passcode, Physical Key vs Remote, Passcode, Fingerprint, Apple Home Key, Physical Key
Eufy

Eufy Video Smart Lock S330

Prime exclusive deal
$349.99

Last recorded price

Buy on Amazon USA
  • + Rating: 4.1
  • + Lock/Unlock System: Remote, Passcode, Fingerprint, Apple Home Key, Physical Key
  • - Warranty: 1 year vs 1.5 years
  • - Integrations: Google Home, Alexa, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter

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.

  • Eufy FamiLock S3
  • Eufy Video Smart Lock S330

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Frequently Asked Questions

Which is better overall: Eufy FamiLock S3 or Eufy Video Smart Lock S330?

Eufy FamiLock S3 has the stronger overall profile in this comparison, especially for warranty and integrations.

What is the biggest difference between Eufy FamiLock S3 and Eufy Video Smart Lock S330?

Rating is one of the clearest differences: Eufy FamiLock S3 lists 4.0, while Eufy Video Smart Lock S330 lists 4.1.

Which one looks better on price?

Eufy FamiLock S3 is listed at $349.99, while Eufy Video Smart Lock S330 is listed at $349.99. Tie.

Who should buy Eufy FamiLock S3?

Choose Eufy FamiLock S3 if your priority is warranty and integrations and that matters more than rating.

Who should buy Eufy Video Smart Lock S330?

Choose Eufy Video Smart Lock S330 if your priority is rating and Lock/Unlock system and that matters more than warranty.

Full comparison table

Compare all 52 Door Locks side by side

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  • 52 Door Locks
  • 55 specs compared
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