Main trade-off
Aqara Smart Lock U50
Remote Aqara control needs an extra hub.
Head-to-head
Aqara U50 vs B50: U50 adds home-key taps, B50 controls remotely without an Aqara hub
The short answer
Choose U50 for Apple Home Key and door-motion-based locking. B50 suits keypad households that want remote Aqara app control over Wi-Fi without buying a hub.
Before you choose
The reasoning and the trade-offs
A hub can reverse the apparent saving
Compare the installed system cost, including the Aqara hub needed by U50 for remote Aqara access.
What this is based on
U50 uses Zigbee for Aqara remote control, while B50 has built-in Wi-Fi. The difference introduces a separate hardware purchase for a new U50 household.
Main trade-off
Aqara Smart Lock B50
No Apple Home Key.
Aqara Smart Lock U50
- Choose it for
- You unlock with an iPhone or Apple Watch Home Key.
- You want a gyroscope to trigger locking after the door closes.
- Main trade-off
- Remote Aqara control needs an extra hub.
Aqara Smart Lock B50
- Choose it for
- You want remote Aqara app access through your existing Wi-Fi.
- Your household is happy using codes and physical keys.
- Main trade-off
- No Apple Home Key.
About this comparison
Compare Aqara U50 and B50 for Apple Home Key, remote guest access, hub costs and automatic locking before replacing your front-door deadbolt.
Choose U50 for Apple Home Key and door-motion-based locking. B50 suits keypad households that want remote Aqara app control over Wi-Fi without buying a hub.
Winner by situation
Start with what you need it to do
Apple Watch Home Key is required
U50 supports Home Key. B50 does not.
- Aqara Smart Lock U50
- Better fit
- Aqara Smart Lock B50
- Not suitable
Remote Aqara control with no added hub
U50 needs its Zigbee hub for this specific path. B50 uses built-in Wi-Fi.
- Aqara Smart Lock U50
- Not suitable
- Aqara Smart Lock B50
- Better fit
Visitors should enter a keypad code
Both offer keypad entry and guest access features.
- Aqara Smart Lock U50
- Similar
- Aqara Smart Lock B50
- Similar
The door has a mortise lock
Both target deadbolt installations. Exact mortise hardware and an adapter assessment are needed before recommending either.
- Aqara Smart Lock U50
- Depends
- Aqara Smart Lock B50
- Depends
What matters in practice
The differences that matter
A hub can reverse the apparent saving
Compare the installed system cost, including the Aqara hub needed by U50 for remote Aqara access.
How we reached this conclusion
U50 uses Zigbee for Aqara remote control, while B50 has built-in Wi-Fi. The difference introduces a separate hardware purchase for a new U50 household.
Home Key cannot be added through a bridge
A Matter bridge does not give B50 the U50's tap-to-unlock hardware.
How we reached this conclusion
B50's supported entry methods omit Home Key. Bridging its lock state to Matter does not change the keypad's physical capabilities.
Door closure and elapsed time are different triggers
U50 offers the more relevant trigger when household members leave the door ajar.
How we reached this conclusion
U50 uses a gyroscope for closure-based auto-locking. B50's timer can expire independently of the door position. Neither removes the need for correct alignment.
Choice A
Aqara, DL-D05D
Smart Lock U50
A keypad deadbolt with Apple Home Key, physical backup keys and Zigbee hub expansion for remote access and smart-home routines.
- Best matched use
- Apple Watch entry without a fingerprint reader
Checked facts
- Four AA batteries power the lock, with a manufacturer estimate of up to six months.
- Apple Home Key, keypad, Bluetooth app access and physical keys are supported.
- A built-in gyroscope supports automatic locking after the door closes.
- The exterior has an IPX5 water-resistance rating.
Choice B
Aqara, DL-D12E
Smart Lock B50
A Wi-Fi keypad deadbolt for remote app control without an extra hub, with physical backup keys and optional Aqara Matter bridging.
- Best matched use
- remote guest access over home Wi-Fi
Checked facts
- Built-in 2.4 GHz Wi-Fi 6 provides remote Aqara Home app control.
- Four AA batteries have a manufacturer estimate of up to six months.
- The exterior is rated IPX3.
- Door thickness range is 35 to 54 mm, with 60 or 70 mm backset.
Meaningful differences
What changes the fit
| What changes | Aqara Smart Lock U50 | Aqara Smart Lock B50 | Why it matters |
|---|---|---|---|
| Remote connection | Zigbee through compatible Aqara hub | Built-in 2.4 GHz Wi-Fi 6 | B50 avoids an additional Aqara bridge for remote app access. |
| Apple Home Key | Supported | Not supported | U50 is the option for tapping a compatible iPhone or Watch. |
| Automatic locking | Gyroscope detects door closure | Timed automatic locking | A timer does not verify that the door has actually closed. |
| Exterior water rating | IPX5 | IPX3 | The ratings use different water-test conditions. Follow placement limits rather than treating either as waterproof. |
What you give up
Every choice has a cost
If you choose Aqara Smart Lock U50
- No fingerprint reader.
If you choose Aqara Smart Lock B50
- Timed locking does not confirm door closure.
Recommendation switch
The decision flips if...
You decide tap-to-unlock is essential
Choose Aqara Smart Lock U50. Home Key is a hardware capability B50 lacks.
You will not add an Aqara hub for remote app control
Choose Aqara Smart Lock B50. B50 provides its own Wi-Fi connection.
Your door has no compatible deadbolt preparation
Choose neither. Choose suitable hardware after checking the door, rather than forcing either deadbolt into the wrong cutout.
What matters in practice
How to make the call
The phone your family carries
If everyone already uses Apple Home Key, U50 preserves that daily action. B50's app and keypad cover remote access and guest codes, but tapping a Watch is outside its feature set.
A lock at a second property
B50 connects directly to the property's 2.4 GHz Wi-Fi. U50 adds a compatible Aqara hub to the equipment you must power, place and maintain there.
A door that closes imperfectly
Fix a rubbing bolt or loose latch before choosing either. U50's motion sensing is useful context for automatic locking, while B50's timer is simpler and cannot physically pull a door closed.
What this comparison cannot tell you
- This compares published hardware and supported features. Neither lock was tested for access reliability or forced entry.
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.
Compared set
Only 1 of 25 models checked match every need here: “Tap my phone or watch to enter”, “Control it away from home without a hub”, “Give family and guests a code”, and “Use it with Apple Home”.
1 matching model from 25 checkedSee the checked facts and calculation notes
Match countThe count uses the current product-to-need assignments for “Tap my phone or watch to enter”, “Control it away from home without a hub”, “Give family and guests a code”, and “Use it with Apple Home”. A need with no documented match does not count.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Aqara Smart Lock U50 |
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| Aqara Smart Lock B50 |
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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 U50
You unlock with an iPhone or Apple Watch Home Key.
See price & reviews on AmazonAqara Smart Lock B50
You want remote Aqara app access through your existing Wi-Fi.
See price & reviews on AmazonLinks open in a new tab.