Door Locks · Head to head

Eufy FamiLock S3 Max vs Eufy Video Smart Lock S330

Full Smart Door Locks comparison in 2026

Updated September 2026
Data from Amazon and official Eufy site.
2026 verdict
Eufy FamiLock S3 Max is the more complete option versus Eufy Video Smart Lock S330 in 2026, helped most by price, rating, and warranty.
Eufy FamiLock S3 Max
Winner
Eufy FamiLock S3 Max
$329.99$399.9918% OFF
Buy on Amazon USACheck price
Its strongest advantages show up in price, rating, and warranty, with integrations helping widen the gap. Eufy Video Smart Lock S330 is still relevant if you care most about Lock/Unlock system, but Eufy FamiLock S3 Max is the stronger recommendation overall. For most setups, Eufy FamiLock S3 Max is the smarter buy.
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FeatureEufy FamiLock S3 MaxEufy Video Smart Lock S330Winner
Price$329.99$349.99Eufy FamiLock S3 Max
Rating4.24.1Eufy FamiLock S3 Max
Warranty1.5 years1 yearEufy FamiLock S3 Max
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Home AssistantEufy FamiLock S3 Max
Lock/Unlock SystemRemote, Passcode, Physical KeyRemote, Passcode, Fingerprint, Apple Home Key, Physical KeyEufy Video Smart Lock S330
Weather ResistanceIP65IP65Tie
Battery Life4 months4 monthsTie
Connectivity2.4 GHz WiFi2.4 GHz WiFiTie
One-Time PasswordYESYESTie
Periodic PasswordYESYESTie
Anti-peep PasswordYESYESTie
Emergency FingerprintNONOTie

Frequently Asked Questions

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

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

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

Price is one of the clearest differences: Eufy FamiLock S3 Max lists $329.99, while Eufy Video Smart Lock S330 lists $349.99.

Which one looks better on price?

Eufy FamiLock S3 Max is listed at $329.99, while Eufy Video Smart Lock S330 is listed at $349.99. Eufy FamiLock S3 Max (better spec).

Who should buy Eufy FamiLock S3 Max?

Choose Eufy FamiLock S3 Max if your priority is price and rating and that matters more than Lock/Unlock system.

Who should buy Eufy Video Smart Lock S330?

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

Full comparison table

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