Door Locks · Head to head

Eufy FamiLock E34 vs Eufy FamiLock S3

Full Smart Door Locks comparison in 2026

Updated August 2026
Data from Amazon and official Eufy site.
2026 verdict
In 2026, the recommendation leans toward Eufy FamiLock E34 over Eufy FamiLock S3, driven by price, rating, and battery life. Its clearest strengths are price, rating, and battery life, and it still looks stronger on its broader overall balance. Eufy FamiLock S3 still makes sense if doorbell is your priority, but most buyers should still lean toward Eufy FamiLock E34. In practical terms, Eufy FamiLock E34 is the easier product to recommend.
vs
FeatureEufy FamiLock E34Eufy FamiLock S3Winner
Price$229.99$299.99Eufy FamiLock E34
Rating4.24.1Eufy FamiLock E34
Battery Life8 months4 monthsEufy FamiLock E34
DoorbellNOYESEufy FamiLock S3
Warranty1.5 years1.5 yearsTie
Weather ResistanceIP65IP65Tie
Connectivity2.4 GHz WiFi2.4 GHz WiFiTie
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
Lock/Unlock SystemRemote, Passcode, Physical KeyRemote, Passcode, Physical KeyTie
One-Time PasswordYESYESTie
Periodic PasswordYESYESTie
Anti-peep PasswordYESYESTie

Frequently Asked Questions

Which is better overall: Eufy FamiLock E34 or Eufy FamiLock S3?

Eufy FamiLock E34 has the stronger overall profile in this comparison, especially for price, rating, and battery life.

What is the biggest difference between Eufy FamiLock E34 and Eufy FamiLock S3?

Price is one of the clearest differences: Eufy FamiLock E34 lists $229.99, while Eufy FamiLock S3 lists $299.99.

Which one looks better on price?

Eufy FamiLock E34 is listed at $229.99, while Eufy FamiLock S3 is listed at $299.99. Eufy FamiLock E34 (better spec).

Who should buy Eufy FamiLock E34?

Choose Eufy FamiLock E34 if your priority is price and rating and that matters more than doorbell.

Who should buy Eufy FamiLock S3?

Choose Eufy FamiLock S3 if your priority is doorbell and that matters more than price.

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