Live nowPrime Day 2026October 6 to 7, 2026Starts in05d19h53m43sSee the deals
Door Locks · Head to head

Eufy FamiLock E34 vs Eufy FamiLock E40

Full Smart Door Locks comparison in 2026

Updated September 2026
Data from Amazon and official Eufy site.
2026 verdict
Eufy FamiLock E40 edges out Eufy FamiLock E34 in 2026, led by rating, Lock/Unlock system, and doorbell.
Eufy FamiLock E40
Winner
Eufy FamiLock E40
$299.99
Buy on Amazon USACheck price
The comparison tilts its way because of rating, Lock/Unlock system, and doorbell, with its broader overall balance keeping it in front. Eufy FamiLock E34 remains a niche alternative if price and battery life matter more than the rest of the comparison. That keeps the verdict firmly in favor of Eufy FamiLock E40.
vs
Price alerts

Door Lock prices change while you decide

We check the price of every Door Lock in the catalog daily and email you the drops, whichever one you pick.

Smart home deals and news, straight to your inbox

Price drops, new releases and the smart home news worth knowing.

No spam. Unsubscribe in one click.

Your subscription could not be saved. Please try again.
Please enter a valid email address.
Your subscription has been successful.
FeatureEufy FamiLock E34Eufy FamiLock E40Winner
Price$229.99$299.99Eufy FamiLock E34
Rating4.34.4Eufy FamiLock E40
Battery Life8 months6 monthsEufy FamiLock E34
Lock/Unlock SystemRemote, Passcode, Physical KeyRemote, Bluetooth, Passcode, Fingerprint, Face Recognition, Physical KeyEufy FamiLock E40
DoorbellNOYESEufy FamiLock E40
Warranty1.5 years1.5 yearsTie
Weather ResistanceIP65IP65Tie
Connectivity2.4 GHz WiFi, Thread Protocol2.4 GHz WiFi, BluetoothTie
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
Eufy

Eufy FamiLock E34

18% OFF
$229.99
$279.99
Buy on Amazon USACheck price
  • + Price: $229.99
  • + Battery Life: 8 months
  • - Rating: 4.3 vs 4.4
  • - Lock/Unlock System: Remote, Passcode, Physical Key vs Remote, Bluetooth, Passcode, Fingerprint, Face Recognition, Physical Key
Winner
Eufy

Eufy FamiLock E40

$299.99
Buy on Amazon USACheck price
  • + Rating: 4.4
  • + Lock/Unlock System: Remote, Bluetooth, Passcode, Fingerprint, Face Recognition, Physical Key
  • + Doorbell: YES
  • - Price: $299.99 vs $229.99
  • - Battery Life: 6 months vs 8 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.

  • Eufy FamiLock E34
  • Eufy FamiLock E40

Loading price history...

Frequently Asked Questions

Which is better overall: Eufy FamiLock E34 or Eufy FamiLock E40?

Eufy FamiLock E40 has the stronger overall profile in this comparison, especially for rating, Lock/Unlock system, and doorbell.

What is the biggest difference between Eufy FamiLock E34 and Eufy FamiLock E40?

Price is one of the clearest differences: Eufy FamiLock E34 lists $229.99, while Eufy FamiLock E40 lists $299.99.

Which one looks better on price?

Eufy FamiLock E34 is listed at $229.99, while Eufy FamiLock E40 is listed at $299.99. Eufy FamiLock E34 (better spec).

Who should buy Eufy FamiLock E34?

Choose Eufy FamiLock E34 if your priority is price and battery life and that matters more than rating.

Who should buy Eufy FamiLock E40?

Choose Eufy FamiLock E40 if your priority is rating and Lock/Unlock system and that matters more than price.

Full comparison table

Compare all 46 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.

  • 46 Door Locks
  • 55 specs compared
  • 51 filters
Open the full comparison
More Door Locks

Top Door Locks to compare next

46 smart door locks from 13 brands compared: Aqara, Eufy, Nuki, Schlage and more. Unlock methods, battery life, retrofit fit and app support.

All Door Locks
Eufy

More Eufy products

A sharper look at other Eufy products worth comparing.

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