Winner
Updated November 2026
Data from the 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, connectivity, and integrations.
It separates itself most clearly on rating, connectivity, and integrations, while still looking better on 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.
News by email
Still comparing? Get what's new by email
New releases and the smart home news worth knowing, in your inbox.
No spam. Unsubscribe in one click.
| Feature | Aqara Smart Lock U400 | Yale Assure Lock 2 with Wi-Fi | Winner |
|---|---|---|---|
| Price | $269.99 | $150.88 | Yale Assure Lock 2 with Wi-Fi |
| Rating | 4.1 | 3.6 | Aqara Smart Lock U400 |
| Connectivity | Bluetooth, Thread Protocol, Other | 2.4 GHz WiFi, Bluetooth | Aqara Smart Lock U400 |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit | Aqara Smart Lock U400 |
| Lock/Unlock System | Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key | Remote, Bluetooth, Passcode, Physical Key | Aqara Smart Lock U400 |
| Emergency Fingerprint | NO | NO | Tie |
| Doorbell | NO | NO | Tie |
| Local Control | YES | YES | Tie |
Winner
$269.99
- + Rating: 4.1
- + Connectivity: Bluetooth, Thread Protocol, Other
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- - Price: $269.99 vs $150.88
42% OFF
$150.88
$259.99
- + Price: $150.88
- - Rating: 3.6 vs 4.1
- - Connectivity: 2.4 GHz WiFi, Bluetooth vs Bluetooth, Thread Protocol, Other
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, connectivity, and integrations.
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 $150.88.
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 $150.88. 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 connectivity 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.
Spotted something wrong on this page? Tell us and we will fix it.
Our store on AmazonShop our ideas on AmazonLists of the smart home setups we would put together ourselves, ready to add to your Amazon cart.Shop on AmazonFull comparison table
Compare all 58 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.
- 58 Door Locks
- 56 specs compared
- 52 filters
- Door Locks
FamiLock E32
- Door Locks
Palm Lock
- Door Locks
FamiLock E40
- Door Locks
Auto-Lock Bolt v2
- Door Locks
Smart Lock Ultra
- Door Locks
Tapo DL100
- Door Locks
Tapo DL105
- Door Locks
Tapo DL130
- Door Locks
4200 Series Smart Deadbolt with Door Lever
- Door Locks
SwitchBot Lock Ultra Vision Combo
- Door Locks
Smart Lock C32
- Door Locks
Lock Vision
- Door Locks
Encode
- Door Locks
Bolt SE
- Door Locks
Smart Lock Pro
- Door Locks
Wi-Fi Smart Deadbolt DDL242X
- Door Locks
Security Smart Lock C30
- Door Locks
Arrive
- Door Locks
Smart Lock U600
- Door Locks
U-Bolt Pro WiFi
- Air Quality Monitors
TVOC Air Quality Monitor
- Buttons
Cube T1 Pro
- Buttons
Wireless Mini Switch T1
- Buttons
Wireless Mini Switch WXKG11LM
- Cameras
Camera E1
- Cameras
Camera G100
- Cameras
Camera Hub G2H Pro
- Cameras
Camera Hub G3
- Cameras
Camera Hub G350
- Cameras
Camera Hub G5 Pro PoE
- Cameras
Camera Hub G5 Pro WiFi
- Ceiling Lights
Ceiling Light T1M
- Doorbells
Doorbell Camera G400 (Wired)
- Doorbells
Doorbell Camera Hub G410
- Doorbells
Smart Video Doorbell G4
- Door Locks
Smart Lock D200i
- Door Locks
Smart Lock N100 Zigbee Edition
- Door Locks
Smart Lock U100
- Door Locks
Smart Lock U200
- Door Locks
Smart Lock U300
