The catch
Aqara Smart Lock U100
You need a compatible Aqara hub for remote control and wider automations.
Side by side
Aqara U100 vs Eufy C220: eufy handles remote entry with no bridge, and U100 serves home-key taps
Quick verdict
Apple Home Key points to U100. In an Alexa or Google household, C220 is the simpler route to direct Wi-Fi app access, since no separate bridge sits in its control path.
Before you buy
Why, and what it costs you
Four more cells go into each battery change
U100 takes four AA cells and C220 takes eight.
Where this comes from
8 minus 4 leaves 4 additional AA cells, and 8 divided by 4 is 2. That does not prove twice the runtime.
The catch
eufy Security Smart Lock C220
Its interior housing holds eight cells and is hardly low-profile.
Aqara Smart Lock U100
- Why pick it
- Apple Home Key and Apple Home integration are on your list.
- Your home already has a compatible Aqara hub.
- The catch
- You need a compatible Aqara hub for remote control and wider automations.
eufy Security Smart Lock C220
- Why pick it
- Remote app control with no separate hub is what you are after.
- Your platform is Alexa or Google, and you have no need for Home Key.
- The catch
- Its interior housing holds eight cells and is hardly low-profile.
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What this page compares
Aqara U100 and eufy C220 are compared on Apple access, batteries, remote control and smart-home support, with the fingerprint features they share kept in mind.
Which one fits
Pick the situations that sound like you
Use Apple Home Key every day
U100 alone supports it.
- Aqara Smart Lock U100
- Better fit
- eufy Security Smart Lock C220
- Caution
Don’t want a separate remote bridge
C220 connects on its own.
- Aqara Smart Lock U100
- Caution
- eufy Security Smart Lock C220
- Better fit
Have an Aqara hub already
That network suits U100.
- Aqara Smart Lock U100
- Better fit
- eufy Security Smart Lock C220
- Good
Require fingerprint entry
Both come with it.
- Aqara Smart Lock U100
- Good
- eufy Security Smart Lock C220
- Good
In practice
Differences you will notice
Four more cells go into each battery change
U100 takes four AA cells and C220 takes eight.
How we worked this out
8 minus 4 leaves 4 additional AA cells, and 8 divided by 4 is 2. That does not prove twice the runtime.
The fingerprint reader they share can’t be what decides this
Fingerprint, code and key entry are already covered on both.
How we worked this out
Look at where the listed entry methods overlap. Home Key is the extra route on U100.
Remote access with no hub can outweigh added integrations
For Aqara remote access, U100 adds a hub, whereas C220 connects directly.
How we worked this out
For app remote control, C220 needs zero separate remote bridges and U100 needs one compatible Aqara hub.
Option A
Aqara, DL-D01D
Smart Lock U100
Entry options listed are fingerprint, home-key, keypad and phone, and the documented door range is 1.375 to 2.17 inches thick.
- Best for
- unlock with a fingerprint on a replacement for my deadbolt
Facts we checked
- The documented door range is 1.375 to 2.17 inches thick.
- Entry options include fingerprint, home-key, keypad, phone.
- The documented platform list includes alexa, apple, google, matter.
- The documented installation is a full deadbolt replacement.
Option B
eufy Security, T8506
Smart Lock C220
You can enter by fingerprint, keypad or phone, and the documented door range is 1.375 to 2.17 inches thick.
- Best for
- unlock with a fingerprint on a replacement for my deadbolt
Facts we checked
- The documented door range is 1.375 to 2.17 inches thick.
- Fingerprint, keypad and phone are listed as entry options.
- Platforms documented include alexa, google.
- The documented installation is a full deadbolt replacement.
Spec by spec
Where they really differ
| Spec | Aqara Smart Lock U100 | eufy Security Smart Lock C220 | In practice |
|---|---|---|---|
| Apple Home Key | Supported | Not supported | A compatible iPhone or Apple Watch can tap in on U100. |
| Remote access | Compatible Aqara hub required for Aqara remote control | Direct Wi-Fi | There is no extra bridge with C220. |
| Battery set | 4 AA | 8 AA | C220 takes twice the number of replaceable cells. |
| Matter and HomeKit | Apple Home plus Matter through compatible Aqara hub | Neither supported in current C220 FAQ | Fingerprint and code entry are shared, but the ecosystem ceiling is not. |
Trade-offs
What each pick costs you
With Aqara Smart Lock U100
- There are plenty of ways to get in, though setup takes more effort than with a stand-alone Wi-Fi lock.
With eufy Security Smart Lock C220
- Apple Home Key is not supported.
Change of plan
When the answer changes
Home Key and built-in Wi-Fi are needed, and fingerprints can go
Neither model fits. Those two requirements come together in Encode Plus, a replacement deadbolt.
Decision guide
How to decide
If Apple Home Key matters, U100 is the lock. If you use Alexa or Google and want direct Wi-Fi app access, C220 is simpler because no separate bridge is in its control path.
If you wear an Apple Watch
When the watch is your preferred credential, U100 Home Key earns its place. C220 does not pick up that capability just because its app runs on an iPhone. Both can still unlock with a fingerprint, and that may be enough for households that do not use Apple Home routines.
For a smart front door that stands alone
If the lock is the only smart-home device you plan to install and direct app access is enough, C220 makes sense. The U100 hub is easier to justify when it also serves Aqara sensors. Put that equipment, along with a free power outlet, in your setup plan.
For ongoing upkeep
C220 takes eight AA batteries, which means having a full replacement set on hand. U100 takes four. Published battery-life estimates vary with operation and network conditions, so do not read cell count alone as a forecast of lifetime or cost.
What this page can’t tell you
- The information here comes from manufacturer feature documentation, and no burglary, battery-life or recognition-speed test was performed.
- Whether a retrofit fits depends on the existing deadbolt and the adapter. Matching door thickness by itself does not settle the question.
By the numbers
What the data shows
What we found across the smart locks we compare, plus the checked facts behind each finding.
How many fit
None of the 25 models checked meets all of “Pair it with Apple Home”, “Get in by tapping my phone or watch”, “Run it remotely without needing a hub”, and “Use a fingerprint to unlock”, so the pick goes to the closest practical compromise.
0 models fit, out of 25 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “Pair it with Apple Home”, “Get in by tapping my phone or watch”, “Run it remotely without needing a hub”, and “Use a fingerprint to unlock”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Aqara Smart Lock U100 |
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| eufy Security Smart Lock C220 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Aqara Smart Lock U100
Apple Home Key and Apple Home integration are on your list.
See price & reviews on Amazoneufy Security Smart Lock C220
Remote app control with no separate hub is what you are after.
See price & reviews on AmazonEach link opens in a new tab.
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