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Door Locks · Head to head

Eufy FamiLock E40 vs Yale Assure Lock 2 with Wi-Fi

Full Smart Door Locks comparison in 2026

Updated September 2026
Data from Amazon and official Eufy and Yale sites.
2026 verdict
In 2026, the recommendation leans toward Eufy FamiLock E40 over Yale Assure Lock 2 with Wi-Fi, driven by rating, warranty, and integrations.
Eufy FamiLock E40
Winner
Eufy FamiLock E40
$299.99
Buy on Amazon USACheck price
The main reason it wins is rating, warranty, and integrations, and Lock/Unlock system and doorbell strengthen that case. Yale Assure Lock 2 with Wi-Fi is still relevant if you care most about price, but Eufy FamiLock E40 is the stronger recommendation overall. That is why the final call still favors Eufy FamiLock E40.
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FeatureEufy FamiLock E40Yale Assure Lock 2 with Wi-FiWinner
Price$299.99$197.00Yale Assure Lock 2 with Wi-Fi
Rating4.43.7Eufy FamiLock E40
Warranty1.5 years1 yearEufy FamiLock E40
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKitEufy FamiLock E40
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, Face Recognition, Physical KeyRemote, Bluetooth, Passcode, Physical KeyEufy FamiLock E40
DoorbellYESNOEufy FamiLock E40
Connectivity2.4 GHz WiFi, Bluetooth2.4 GHz WiFi, BluetoothTie
Emergency FingerprintNONOTie

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.

  • Eufy FamiLock E40
  • Yale Assure Lock 2 with Wi-Fi

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Frequently Asked Questions

Which is better overall: Eufy FamiLock E40 or Yale Assure Lock 2 with Wi-Fi?

Eufy FamiLock E40 has the stronger overall profile in this comparison, especially for rating, warranty, and integrations.

What is the biggest difference between Eufy FamiLock E40 and Yale Assure Lock 2 with Wi-Fi?

Price is one of the clearest differences: Eufy FamiLock E40 lists $299.99, while Yale Assure Lock 2 with Wi-Fi lists $197.00.

Which one looks better on price?

Eufy FamiLock E40 is listed at $299.99, while Yale Assure Lock 2 with Wi-Fi is listed at $197.00. Yale Assure Lock 2 with Wi-Fi (better spec).

Who should buy Eufy FamiLock E40?

Choose Eufy FamiLock E40 if your priority is rating and warranty and that matters more than price.

Who should buy Yale Assure Lock 2 with Wi-Fi?

Choose Yale Assure Lock 2 with Wi-Fi if your priority is price and that matters more than rating.

Full comparison table

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