Updated November 2026
Data from the official Aqara and SwitchBot sites.
2026 verdict
One door reads your face, the other senses your phone approaching: the SwitchBot Lock Ultra Vision Combo wins this door lock comparison.
It leads on price, owner rating, battery life and a bundle that already includes the hub the Aqara Smart Lock U400 sells separately. Its Keypad Vision adds 3D face recognition to fingerprint, passcode, NFC and app entry, with an emergency fingerprint mode on top. The Aqara Smart Lock U400 answers with an IP65-rated exterior panel the indoor-only SwitchBot cannot match, plus Apple Home Key, which the SwitchBot does not offer, and ultra-wideband unlocking that opens the door as you approach with an iPhone or Apple Watch. Both offer full guest password features and Matter support. As a complete package on a European door, the SwitchBot Lock Ultra Vision Combo takes the win; exposed doors and UWB fans lean Aqara.
vs
Winner
Connectivity
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 | SwitchBot Lock Ultra Vision Combo | Winner |
|---|---|---|---|
| Rating | 4.1 | 4.4 | SwitchBot Lock Ultra Vision Combo |
| Weather Resistance | IP65 | NO | Aqara Smart Lock U400 |
| Battery Life | 6 months | 9 months | SwitchBot Lock Ultra Vision Combo |
| Connectivity | Bluetooth, Thread Protocol, Other | Bluetooth | Aqara Smart Lock U400 |
| Emergency Fingerprint | NO | YES | SwitchBot Lock Ultra Vision Combo |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| Lock/Unlock System | Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key | Remote, Bluetooth, Passcode, Fingerprint, Face Recognition, NFC Tag, Physical Key | Tie |
| One-Time Password | YES | YES | Tie |
| Periodic Password | YES | YES | Tie |
| Anti-peep Password | YES | YES | Tie |
| Doorbell | NO | NO | Tie |
| Local Control | YES | YES | Tie |
What the differences mean
How each one recognizes you
The SwitchBot Lock Ultra Vision Combo's Keypad Vision uses 3D face recognition to unlock the moment it sees you, no phone or touch needed. The Aqara Smart Lock U400 instead senses an iPhone or Apple Watch over ultra-wideband as you approach the door.
Door type and weatherproofing
The Aqara Smart Lock U400 is a full deadbolt replacement with an IP65-rated exterior panel built for outdoor exposure. The SwitchBot Lock Ultra Vision Combo retrofits a European euro-cylinder and carries no weather resistance, with its Keypad Vision mounted nearby.
What's included
The SwitchBot Lock Ultra Vision Combo bundles the lock, the Keypad Vision and a SwitchBot hub in one box, so Wi-Fi, Matter and IFTTT work out of that same purchase. The Aqara Smart Lock U400 needs a separate Aqara Hub bought on its own to reach Google Home and Alexa.
Battery life
The SwitchBot Lock Ultra Vision Combo is rated for about 9 months per charge, ahead of the roughly 6 months on the Aqara Smart Lock U400.
Emergency fingerprint
The SwitchBot Lock Ultra Vision Combo includes a dedicated emergency fingerprint mode. The Aqara Smart Lock U400 does not offer one.
Price and rating
The SwitchBot Lock Ultra Vision Combo costs less than the Aqara Smart Lock U400 and carries the higher average owner rating of the two, despite bundling more hardware in the box.
Which one to buy if
- your door is exposed to weather and needs a sealed exterior panel
The Aqara Smart Lock U400's IP65 rating is built for that; the SwitchBot Lock Ultra Vision Combo carries no weather resistance.
- you want to unlock the door with your face and full hands
The SwitchBot Lock Ultra Vision Combo's Keypad Vision does exactly that, something the Aqara Smart Lock U400 does not offer.
- you'd rather the hub come in the box than be a separate purchase
The SwitchBot Lock Ultra Vision Combo bundles its hub; the Aqara Smart Lock U400 requires an Aqara Hub sold separately.
- you want the longest stretch between battery charges
The SwitchBot Lock Ultra Vision Combo is rated for about 9 months against roughly 6 for the Aqara Smart Lock U400.
- you specifically want hands-free unlock via an iPhone or Apple Watch over UWB
That is the Aqara Smart Lock U400's signature feature, and the SwitchBot Lock Ultra Vision Combo has no equivalent.
$269.99
- + Weather Resistance: IP65
- + Connectivity: Bluetooth, Thread Protocol, Other
- - Rating: 4.1 vs 4.4
- - Battery Life: 6 months vs 9 months
Winner
- + Rating: 4.4
- + Battery Life: 9 months
- + Emergency Fingerprint: YES
- - Weather Resistance: NO vs IP65
- - Connectivity: Bluetooth vs Bluetooth, Thread Protocol, Other
What owners say
Aqara Smart Lock U400 owners are won over by the ultra-wideband unlock opening the door as they approach, and by a fast motor that feels well ahead of an old Schlage or Yale, though a plasticky housing at this price is their most common complaint. SwitchBot Lock Ultra Vision Combo owners talk about walking up with full hands and being recognized instantly by the Keypad Vision's face scan, and several who upgraded from SwitchBot's older Pro Lock say the new calibration options finally ended their lockout and recalibration headaches, while a small number report a faulty first unit or an isolated, unsettling security report that SwitchBot addressed with a replacement.
Frequently Asked Questions
Which is better overall: Aqara Smart Lock U400 or SwitchBot Lock Ultra Vision Combo?
The SwitchBot Lock Ultra Vision Combo wins with its lower price, higher rating, longer battery life, included hub, face recognition and emergency fingerprint mode. The Aqara Smart Lock U400 counters with an IP65 outer panel and hands-free UWB unlocking.
What is the biggest difference between Aqara Smart Lock U400 and SwitchBot Lock Ultra Vision Combo?
How the door recognizes you. The SwitchBot looks at your face via its Keypad Vision and opens. The Aqara senses your iPhone or Apple Watch approaching over ultra-wideband. Both also offer fingerprint, codes, NFC and physical keys, and only the Aqara adds Home Key.
Which fits which doors?
The Aqara Smart Lock U400 replaces a deadbolt with a weatherproof IP65 exterior panel. The SwitchBot Lock Ultra Vision Combo retrofits European cylinders and is not weather-resistant, with the Keypad Vision mounted nearby.
Does either one come with a hub included?
The SwitchBot Lock Ultra Vision Combo does, bundling a SwitchBot hub that adds Wi-Fi, Matter and IFTTT. The Aqara Smart Lock U400 needs an Aqara Hub bought separately for Google Home and Alexa.
Who should buy Aqara Smart Lock U400?
Choose it for an exposed deadbolt door or the UWB experience: walk up with your iPhone or Apple Watch and the IP65-sealed lock opens itself.
Who should buy SwitchBot Lock Ultra Vision Combo?
Choose it for the most complete bundle on a euro-cylinder door: face, fingerprint, code, NFC and app entry, hub included, at a better price and 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 59 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.
- 59 Door Locks
- 56 specs compared
- 52 filters
- Door Locks
FamiLock E32
- Door Locks
Palm Lock
- Door Locks
FamiLock E40
- Door Locks
Smart Lock Ultra
- Door Locks
Auto-Lock Bolt v2
- Door Locks
Tapo DL105
- Door Locks
Tapo DL130
- Door Locks
4200 Series Smart Deadbolt with Door Lever
- Door Locks
Tapo DL100
- 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
FamiLock S3 Max
- Door Locks
Arrive
- Door Locks
U-Bolt Pro WiFi
- Door Locks
Smart Lock C220
- Door Locks
Nest x Yale Lock
- 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
- Air Purifiers
Air Purifier Table
- Air Quality Monitors
Meter Pro (CO2 Monitor)
- Buttons
Remote
- Cameras
Outdoor Pan/Tilt Cam 3K
- Ceiling Lights
RGBICWW Ceiling Light 12inch
- Ceiling Lights
RGBICWW Ceiling Light 15inch
- Displays
Smart E-Ink Home Dashboard
- Doorbells
Smart Video Doorbell
- Door Locks
SwitchBot Lock Pro
- Door Locks
Lock Ultra Max
- Door Locks
SwitchBot Lock Vision Pro
- Door Locks
Lock Vision
- Door Locks
SwitchBot Lock
- Door & Window Sensors
Contact Sensor
- Hubs
AI Hub
- Hubs
SwitchBot Hub 2
- Hubs
Hub 3
- Hubs
Hub Mini
- IR Remote Controls
SwitchBot Hub 2
- IR Remote Controls
Hub 3