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Door Locks · Head to head

Aqara Smart Lock U100 vs Eufy Smart Lock E31

Full Smart Door Locks comparison in 2026

Updated September 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 rating, connectivity, and Lock/Unlock system.
Aqara Smart Lock U100
Winner
Aqara Smart Lock U100
$149.99
Buy on Amazon USACheck price
It has the clearer edge on rating, 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 and battery life are what you value most. That is why the final call still favors Aqara Smart Lock U100.
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FeatureAqara Smart Lock U100Eufy Smart Lock E31Winner
Price$149.99$124.99Eufy Smart Lock E31
Rating4.14.0Aqara 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, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
One-Time PasswordYESYESTie
Periodic PasswordYESYESTie
Anti-peep PasswordYESYESTie
Emergency FingerprintNONOTie
DoorbellNONOTie
Winner
Aqara

Aqara Smart Lock U100

$149.99
Buy on Amazon USACheck price
  • + Rating: 4.1
  • + Connectivity: Bluetooth, Zigbee
  • + Lock/Unlock System: Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key
  • - Price: $149.99 vs $124.99
  • - Battery Life: 8 months vs 14 months

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Aqara Smart Lock U100
  • Eufy Smart Lock E31

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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 rating, 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 $124.99.

Which one looks better on price?

Aqara Smart Lock U100 is listed at $149.99, while Eufy Smart Lock E31 is listed at $124.99. Eufy Smart Lock E31 (better spec).

Who should buy Aqara Smart Lock U100?

Choose Aqara Smart Lock U100 if your priority is rating 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 battery life and that matters more than rating.

Full comparison table

Compare all 44 Door Locks side by side

You are looking at two of them. The full table lines up all Door Locks in the catalog with the same specs, so you can filter by what you need and sort by price or rating.

  • 44 Door Locks
  • 55 specs compared
  • 51 filters
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