Door Locks · Head to head

Aqara Smart Lock U200 vs Aqara Smart Lock U400

Full Smart Door Locks comparison in 2026

Updated June 2026
Data from Amazon and official Aqara site.
2026 verdict
In this 2026 Aqara Smart Lock U200 vs Aqara Smart Lock U400 comparison, Aqara Smart Lock U200 comes out ahead thanks to price, integrations, and anti-peep password. The comparison tilts its way because of price, integrations, and anti-peep password, with its broader overall balance keeping it in front. The only strong reason to choose Aqara Smart Lock U400 is if rating and connectivity is more important to you than the overall verdict. Overall, Aqara Smart Lock U200 makes more sense for most people.
vs
FeatureAqara Smart Lock U200Aqara Smart Lock U400Winner
Price$169.99$219.99Aqara Smart Lock U200
Rating3.74.2Aqara Smart Lock U400
ConnectivityThread ProtocolBluetooth, Thread Protocol, OtherAqara Smart Lock U400
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, IFTTT, MatterGoogle Home, Alexa, Apple HomeKit, Home Assistant, MatterAqara Smart Lock U200
Anti-peep PasswordYESNOAqara Smart Lock U200
Weather ResistanceIPX5IP65Tie
Battery Life6 months6 monthsTie
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyTie
One-Time PasswordYESYESTie
Periodic PasswordYESYESTie
Emergency FingerprintNONOTie
DoorbellNONOTie

Frequently Asked Questions (FAQ)

Which is better overall: Aqara Smart Lock U200 or Aqara Smart Lock U400?
Aqara Smart Lock U200 has the stronger overall profile in this comparison, especially for price, integrations, and anti-peep password.
What is the biggest difference between Aqara Smart Lock U200 and Aqara Smart Lock U400?
Price is one of the clearest differences: Aqara Smart Lock U200 lists $169.99, while Aqara Smart Lock U400 lists $219.99.
Which one looks better on price?
Aqara Smart Lock U200 is listed at $169.99, while Aqara Smart Lock U400 is listed at $219.99. Aqara Smart Lock U200 (better spec).
Who should buy Aqara Smart Lock U200?
Choose Aqara Smart Lock U200 if your priority is price and integrations and that matters more than rating.
Who should buy Aqara Smart Lock U400?
Choose Aqara Smart Lock U400 if your priority is rating and connectivity 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
DealsNew ReleasesBrandsBlogEcosystemsProtocolsUse CasesAboutPodcastTerms of UsePrivacy Policy
© 2026 Smart Home Compared
Search