Door Locks · Head to head

Aqara Smart Lock U100 vs Eufy Smart Lock E31

Full Smart Door Locks comparison in 2026

Updated August 2026
Data from Amazon and official Aqara and Eufy sites.
2026 verdict
Across the 2026 comparison, Aqara Smart Lock U100 earns the nod over Eufy Smart Lock E31 on the strength of weather resistance, connectivity, and Lock/Unlock system. It has the clearer edge on weather resistance, connectivity, and Lock/Unlock system, and it stays ahead on its broader overall balance. There is still a case for Eufy Smart Lock E31, but mainly if price, rating, and battery life are what you value most. That is why the final call still favors Aqara Smart Lock U100.
vs
FeatureAqara Smart Lock U100Eufy Smart Lock E31Winner
Price$149.99$134.99Eufy Smart Lock E31
Rating4.14.2Eufy Smart Lock E31
Weather ResistanceIP65NOAqara Smart Lock U100
Battery Life8 months14 monthsEufy Smart Lock E31
ConnectivityBluetooth, Zigbee2.4 GHz WiFiAqara Smart Lock U100
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyRemote, Passcode, Fingerprint, Physical KeyAqara Smart Lock U100
IntegrationsGoogle Home, Alexa, Apple HomeKit, Home Assistant, IFTTT, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
One-Time PasswordYESYESTie
Periodic PasswordYESYESTie
Anti-peep PasswordYESYESTie
Emergency FingerprintNONOTie
DoorbellNONOTie

Frequently Asked Questions

Which is better overall: Aqara Smart Lock U100 or Eufy Smart Lock E31?

Aqara Smart Lock U100 has the stronger overall profile in this comparison, especially for weather resistance, connectivity, and Lock/Unlock system.

What is the biggest difference between Aqara Smart Lock U100 and Eufy Smart Lock E31?

Price is one of the clearest differences: Aqara Smart Lock U100 lists $149.99, while Eufy Smart Lock E31 lists $134.99.

Which one looks better on price?

Aqara Smart Lock U100 is listed at $149.99, while Eufy Smart Lock E31 is listed at $134.99. Eufy Smart Lock E31 (better spec).

Who should buy Aqara Smart Lock U100?

Choose Aqara Smart Lock U100 if your priority is weather resistance and connectivity and that matters more than price.

Who should buy Eufy Smart Lock E31?

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

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Independent · Not sponsoredBrands never pay for placement or rankings. Affiliate commissions never influence our comparisons.
© 2026 Smart Home Compared
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