Main trade-off
Aqara Smart Lock U400, Black
Its integrated electronics create a visible keypad panel.
Head-to-head
Aqara Smart Lock U400 vs Level Lock Pro: U400 includes the keypad, Level’s guest codes need an optional one
The short answer
Choose U400 for its integrated keypad, fingerprint reader and supported Apple UWB approach unlocking. Choose Level Lock Pro for concealed smart hardware and a replaceable CR2 battery. Both replace the deadbolt and support Apple home key, while Level code entry needs an optional keypad. Confirm the door and home-hub requirements first.
Before you choose
The reasoning and the trade-offs
A Level code-entry setup adds another device
The optional keypad creates a second powered component to mount and maintain. U400 keeps code entry in the lock's own exterior panel.
What this is based on
Level says the keypad is sold separately and AA-powered. Its lock uses one CR2 battery. U400 documents an integrated keypad and rechargeable lock battery.
Main trade-off
Level Lock Pro, Matte Black
Code entry requires a separate powered keypad.
Aqara Smart Lock U400, Black
- Choose it for
- Use fingerprints and codes without buying a separate keypad
- Use UWB approach unlocking with the required Apple devices and home hub
- Main trade-off
- Its integrated electronics create a visible keypad panel.
Level Lock Pro, Matte Black
- Choose it for
- Keep a conventional-looking exterior with the smart hardware inside the door
- Replace a CR2 cell rather than recharge an integrated lock battery
- Main trade-off
- Code entry requires a separate powered keypad.
About this comparison
Compare Aqara U400 and Level Lock Pro for integrated fingerprint and code entry, Apple UWB requirements, a discreet exterior and battery maintenance.
Choose U400 for its integrated keypad, fingerprint reader and supported Apple UWB approach unlocking. Choose Level Lock Pro for concealed smart hardware and a replaceable CR2 battery. Both replace the deadbolt and support Apple home key, while Level code entry needs an optional keypad. Confirm the door and home-hub requirements first.
Winner by situation
Start with what you need it to do
Guest code entry must be included in the lock package
U400 includes the keypad. The reviewed Level lock-only offer requires a separate Level Keypad.
- Aqara Smart Lock U400, Black
- Better fit
- Level Lock Pro, Matte Black
- Not suitable
Fingerprint identification is required
Only U400 documents a fingerprint reader.
- Aqara Smart Lock U400, Black
- Better fit
- Level Lock Pro, Matte Black
- Not suitable
The outside should resemble a conventional deadbolt
Level conceals its electronics inside the door. U400 has a visible keypad panel.
- Aqara Smart Lock U400, Black
- Caution
- Level Lock Pro, Matte Black
- Better fit
I want to swap a disposable battery instead of charging the lock
Level uses one CR2 lithium cell. U400 uses a rechargeable lock battery.
- Aqara Smart Lock U400, Black
- Not suitable
- Level Lock Pro, Matte Black
- Better fit
I must retain my existing exterior cylinder
Both replace the deadbolt. Level Lock Pro is distinct from the Level Bolt retrofit.
- Aqara Smart Lock U400, Black
- Not suitable
- Level Lock Pro, Matte Black
- Not suitable
What matters in practice
The differences that matter
A Level code-entry setup adds another device
The optional keypad creates a second powered component to mount and maintain. U400 keeps code entry in the lock's own exterior panel.
How we reached this conclusion
Level says the keypad is sold separately and AA-powered. Its lock uses one CR2 battery. U400 documents an integrated keypad and rechargeable lock battery.
Touch access does not supply biometric identification
A requirement to identify the user's fingerprint points toward U400. Level's touch feature cannot be counted as a fingerprint reader simply because a hand contacts the lock.
How we reached this conclusion
Aqara specifically documents fingerprint storage and recognition. Level lists touch access and other credentials, without fingerprint recognition hardware.
The same home-key label does not establish UWB compatibility
Both support a tap using Apple home key, while U400's approach-unlock mode has additional device and Thread-enabled Apple home-hub requirements. Check that full combination before paying for the feature.
How we reached this conclusion
Aqara's UWB footnote requires select iPhone or Apple Watch models and a Thread-enabled Apple home hub. Level documents home-key tapping and separately lists auto-unlock without claiming UWB.
Choice A
Aqara, DL-D06E
Smart Lock U400, Black
A Matter-over-Thread deadbolt with fingerprint access, Apple home key and supported-device UWB approach unlocking.
- Best matched use
- Use fingerprints and codes without buying a separate keypad
Checked facts
- Code-entry hardware: Integrated keypad
- Fingerprint entry: Integrated fingerprint reader
- UWB approach unlocking: Documented for supported Apple devices with a Thread-enabled Apple home hub
- Battery maintenance: Rechargeable lock battery
Choice B
Level, Level Lock Pro
Lock Pro, Matte Black
The documented door range is 1.75 to 2 inches thick. Entry options include home-key, phone, touch, key-fob, physical-key.
- Best matched use
- Keep a conventional-looking exterior with the smart hardware inside the door
Checked facts
- Code-entry hardware: Compatible Level Keypad sold separately
- Fingerprint entry: Touch access, without fingerprint identification
- UWB approach unlocking: No UWB method documented, app-based auto-unlock is listed
- Battery maintenance: One replaceable CR2 lithium battery
Meaningful differences
What changes the fit
| What changes | Aqara Smart Lock U400, Black | Level Lock Pro, Matte Black | Why it matters |
|---|---|---|---|
| Code-entry hardware | Integrated keypad | Compatible Level Keypad sold separately | The Level lock-only offer does not provide a keypad for visitors. |
| Fingerprint entry | Integrated fingerprint reader | Touch access, without fingerprint identification | Touching a lock and identifying a fingerprint are different entry methods. |
| UWB approach unlocking | Documented for supported Apple devices with a Thread-enabled Apple home hub | No UWB method documented, app-based auto-unlock is listed | Do not mistake any auto-unlock feature for Apple's UWB route. |
| Battery maintenance | Rechargeable lock battery | One replaceable CR2 lithium battery | The chosen maintenance routine requires different supplies. |
| Exterior appearance | Visible integrated keypad and fingerprint panel | Conventional-looking deadbolt with concealed electronics | Both are replacement locks despite their different appearance. |
| Apple home key | Supported | Supported | A basic home-key tap alone does not require choosing U400. |
What you give up
Every choice has a cost
If you choose Aqara Smart Lock U400, Black
- UWB needs the specified Apple hardware and home hub, and the battery needs recharging.
If you choose Level Lock Pro, Matte Black
- Touch access is not fingerprint identification, and no UWB method is documented.
Recommendation switch
The decision flips if...
Fingerprint identification and an included keypad are required
Choose Aqara Smart Lock U400, Black. U400 supplies both in its integrated exterior panel.
A conventional-looking exterior and replaceable CR2 cell are priorities
Choose Level Lock Pro, Matte Black. Level conceals its smart hardware and uses the requested battery type.
The current exterior cylinder must remain installed
Choose neither. Both products are replacement deadbolts.
What matters in practice
How to make the call
Price the actual entry methods
A Level lock-only offer can be enough for someone who prefers home key, a fob or a physical key. Visitors who need codes change the shopping list because the compatible keypad is separate. U400 supplies its keypad and fingerprint reader together. Compare the complete package required by the people who will use the door.
Distinguish a tap from an approach
Both products document Apple home key, which makes a tap-based preference insufficient to choose between them. U400's UWB approach feature adds a specific Apple hardware and home-hub check. Level also lists auto-unlock, but its reviewed page does not describe that as UWB. The connection method matters more than a shared automatic-unlock label.
Look inside the installation and maintenance plan
Level's discreet appearance does not make it an interior-only retrofit. It replaces the existing deadbolt and specifies a 1.75 to 2-inch door range, subject to its other fit requirements. U400 also replaces the lock. Decide whether a spare CR2 cell or a charging routine suits you, and check the exact package for any included hub or extra battery.
What this comparison cannot tell you
- We have not tested lock security, approach detection, biometric accuracy or battery runtime. A supported smart-home protocol does not guarantee every feature on every phone and hub combination.
What the facts say
What the comparison shows
Useful conclusions from the current smart locks comparison, followed by the checked facts used to reach them.
See the checked facts and calculation notes
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Aqara Smart Lock U400, Black |
|
| |
| Level Lock Pro, Matte Black |
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Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
Aqara Smart Lock U400, Black
Use fingerprints and codes without buying a separate keypad
See price & reviews on AmazonLevel Lock Pro, Matte Black
Keep a conventional-looking exterior with the smart hardware inside the door
See price & reviews on AmazonLinks open in a new tab.