Door Locks · Head to head

Aqara Smart Lock U200 vs Eufy FamiLock S3 Max

Full Smart Door Locks comparison in 2026

Updated June 2026
Data from Amazon and official Aqara and Eufy sites.
2026 verdict
In this 2026 Aqara Smart Lock U200 vs Eufy FamiLock S3 Max comparison, Aqara Smart Lock U200 comes out ahead thanks to price, battery life, and integrations. The comparison tilts its way because of price, battery life, and integrations, with lock/unlock system and one-time password keeping it in front. Eufy FamiLock S3 Max is still relevant if you care most about rating, warranty, and doorbell, but Aqara Smart Lock U200 is the stronger recommendation overall. That keeps the verdict firmly in favor of Aqara Smart Lock U200.
vs
FeatureAqara Smart Lock U200Eufy FamiLock S3 MaxWinner
Price$169.99$279.98Aqara Smart Lock U200
Rating3.74.4Eufy FamiLock S3 Max
Warranty1 year18 monthsEufy FamiLock S3 Max
Battery Life6 months4 monthsAqara Smart Lock U200
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, IFTTT, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, MatterAqara Smart Lock U200
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyRemote, Passcode, Physical KeyAqara Smart Lock U200
One-Time PasswordYESNOAqara Smart Lock U200
Periodic PasswordYESNOAqara Smart Lock U200
Anti-peep PasswordYESNOAqara Smart Lock U200
DoorbellNOYESEufy FamiLock S3 Max
Weather ResistanceIPX5IP65Tie
ConnectivityThread Protocol2.4 GHz WiFiTie

Frequently Asked Questions (FAQ)

Which is better overall: Aqara Smart Lock U200 or Eufy FamiLock S3 Max?
Aqara Smart Lock U200 has the stronger overall profile in this comparison, especially for price, battery life, and integrations.
What is the biggest difference between Aqara Smart Lock U200 and Eufy FamiLock S3 Max?
Price is one of the clearest differences: Aqara Smart Lock U200 lists $169.99, while Eufy FamiLock S3 Max lists $279.98.
Which one looks better on price?
Aqara Smart Lock U200 is listed at $169.99, while Eufy FamiLock S3 Max is listed at $279.98. Aqara Smart Lock U200 (better spec).
Who should buy Aqara Smart Lock U200?
Choose Aqara Smart Lock U200 if your priority is price and battery life and that matters more than rating.
Who should buy Eufy FamiLock S3 Max?
Choose Eufy FamiLock S3 Max if your priority is rating and warranty and that matters more than price.
More Door Locks

Top Door Locks to compare next

Compare the best smart door locks by unlock methods, connectivity, battery life, integrations, security alerts, and more. Find the right lock for your home.

Compare Door Locks
Aqara

More Aqara products

A sharper look at other Aqara products worth comparing.

Explore Aqara
Eufy

More Eufy products

A sharper look at other Eufy products worth comparing.

Explore Eufy
DealsNew ReleasesBrandsBlogEcosystemsProtocolsUse CasesAboutPodcastTerms of UsePrivacy Policy
© 2026 Smart Home Compared
Search