Door Locks · Head to head

Aqara Smart Lock U400 vs Yale Assure Lock 2 with Wi-Fi

Full Smart Door Locks comparison in 2026

Updated September 2026
Data from Amazon and official Aqara and Yale sites.
2026 verdict
Aqara Smart Lock U400 edges out Yale Assure Lock 2 with Wi-Fi in 2026, led by rating, weather resistance, and connectivity.
Aqara Smart Lock U400
Winner
Aqara Smart Lock U400
$269.99
Buy on Amazon USACheck price
It separates itself most clearly on rating, weather resistance, and connectivity, while still looking better on integrations and Lock/Unlock system. The only strong reason to choose Yale Assure Lock 2 with Wi-Fi is if price is more important to you than the overall verdict. For the average buyer, Aqara Smart Lock U400 is the safer choice.
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.

Your subscription could not be saved. Please try again.
Your subscription has been successful.

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.

FeatureAqara Smart Lock U400Yale Assure Lock 2 with Wi-FiWinner
Price$269.99$169.99Yale Assure Lock 2 with Wi-Fi
Rating4.13.7Aqara Smart Lock U400
Weather ResistanceIP65NOAqara Smart Lock U400
ConnectivityBluetooth, Thread Protocol, Other2.4 GHz WiFi, BluetoothAqara Smart Lock U400
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKitAqara Smart Lock U400
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyRemote, Bluetooth, Passcode, Physical KeyAqara Smart Lock U400
One-Time PasswordYESNOAqara Smart Lock U400
Periodic PasswordYESNOAqara Smart Lock U400
Anti-peep PasswordYESNOAqara Smart Lock U400
Emergency FingerprintNONOTie
DoorbellNONOTie

Frequently Asked Questions

Which is better overall: Aqara Smart Lock U400 or Yale Assure Lock 2 with Wi-Fi?

Aqara Smart Lock U400 has the stronger overall profile in this comparison, especially for rating, weather resistance, and connectivity.

What is the biggest difference between Aqara Smart Lock U400 and Yale Assure Lock 2 with Wi-Fi?

Price is one of the clearest differences: Aqara Smart Lock U400 lists $269.99, while Yale Assure Lock 2 with Wi-Fi lists $169.99.

Which one looks better on price?

Aqara Smart Lock U400 is listed at $269.99, while Yale Assure Lock 2 with Wi-Fi is listed at $169.99. Yale Assure Lock 2 with Wi-Fi (better spec).

Who should buy Aqara Smart Lock U400?

Choose Aqara Smart Lock U400 if your priority is rating and weather resistance 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

Compare all 42 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.

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

Top Door Locks to compare next

42 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
Aqara

More Aqara products

A sharper look at other Aqara products worth comparing.

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