Door Locks · Head to head

Eufy Smart Lock C33 vs Eufy Smart Lock E31

Full Smart Door Locks comparison in 2026

Updated August 2026
Data from Amazon and official Eufy site.
2026 verdict
Eufy Smart Lock E31 wins the 2026 matchup against Eufy Smart Lock C33, mainly on rating, battery life, and integrations. Its clearest strengths are rating, battery life, and integrations, and it still looks stronger on its broader overall balance. There is still a case for Eufy Smart Lock C33, but mainly if price and weather resistance are what you value most. For most setups, Eufy Smart Lock E31 is the smarter buy.
vs
FeatureEufy Smart Lock C33Eufy Smart Lock E31Winner
Price$105.25$134.99Eufy Smart Lock C33
Rating4.14.2Eufy Smart Lock E31
Weather ResistanceIP53NOEufy Smart Lock C33
Battery Life8 months14 monthsEufy Smart Lock E31
IntegrationsGoogle Home, AlexaGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterEufy Smart Lock E31
Connectivity2.4 GHz WiFi2.4 GHz WiFiTie
Lock/Unlock SystemRemote, Passcode, Fingerprint, Physical KeyRemote, Passcode, Fingerprint, Physical KeyTie
One-Time PasswordYESYESTie
Periodic PasswordYESYESTie
Anti-peep PasswordYESYESTie
Emergency FingerprintNONOTie
DoorbellNONOTie

Frequently Asked Questions

Which is better overall: Eufy Smart Lock C33 or Eufy Smart Lock E31?

Eufy Smart Lock E31 has the stronger overall profile in this comparison, especially for rating, battery life, and integrations.

What is the biggest difference between Eufy Smart Lock C33 and Eufy Smart Lock E31?

Price is one of the clearest differences: Eufy Smart Lock C33 lists $105.25, while Eufy Smart Lock E31 lists $134.99.

Which one looks better on price?

Eufy Smart Lock C33 is listed at $105.25, while Eufy Smart Lock E31 is listed at $134.99. Eufy Smart Lock C33 (better spec).

Who should buy Eufy Smart Lock C33?

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

Who should buy Eufy Smart Lock E31?

Choose Eufy Smart Lock E31 if your priority is rating and battery life and that matters more than price.

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