Aqara U50 vs U100: Do You Need Fingerprint Entry?
Automated research by Top10Scout editorial team · Not hands-on tested · Last verified 2026-10-05
Published · Updated
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Choose U50 when Apple Home Key and a keypad cover everyday entry; choose U100 when fingerprint access would make the door easier for the people using it. Both already offer a connected deadbolt workflow. The reason to spend on U100 is a useful extra entry method, not an assumption that the higher model number makes every automation or emergency situation easier.
What changes at the door?
What changes in daily use
| Decision | Aqara U50 | Aqara U100 |
|---|---|---|
| Home Key | can be unlocked by tapping with iPhone or Apple Watch | can be unlocked by tapping it with an iPhone or Apple Watch |
| Everyday entry | Keypad, physical keys, voice control, NFC cards | Built-in Fingerprint Reader and Keypad |
| Automatic locking | Reminds you if the door is left open and locks automatically when it's closed. | the built-in gyroscope enables the U100 to lock automatically after the door is closed. |
| Battery arrangement | 4 AA Batteries (6V)(included) | Powered by 4 AA 1.5V batteries (included) |
The daily action matters more than a long compatibility list. Someone who habitually arrives with an available phone or watch may already be well served by Home Key. A household member who prefers to leave the phone in a bag may value U100’s fingerprint reader more.
Think about the whole household, including people who do not want another app. A keypad or physical key can remain the preferred method for some users. We would choose the lock around those habits rather than expect everyone to adopt the owner’s favorite unlocking routine.
Is U100 necessary for Apple Home Key?
No. Both product pages document tap-based entry with a compatible iPhone or Apple Watch. If that is the feature you came to buy, U50 belongs on the shortlist. Fingerprint entry is a separate benefit rather than a prerequisite for Home Key.
U100 provides a useful alternative when tapping a device is inconvenient or another regular user does not use the same phone ecosystem. It may also simplify frequent entry without sharing a household PIN. We would pay for that convenience when it will be used repeatedly, rather than for an advertised recognition-speed claim.
Neither the manufacturer’s accuracy percentage nor a feature table is our test of your family’s fingerprints. Keep another authorized entry method available, and confirm that the people who need access can use the lock comfortably after installation.
What do hubs and guest access add to the decision?
Both locks use Zigbee in the Aqara setup. U50’s documentation requires a compatible Aqara hub for its Matter integration path. U100 explicitly requires an Aqara Zigbee hub for remotely setting and managing passwords through Aqara Home. Do not mistake an ecosystem logo for a complete hub-free remote-management package.
For occasional guests, decide how long access should last and who will administer it. A temporary code is often a more natural workflow than enrolling a visitor’s fingerprint. Use the access method that fits the visit, rather than leaving a permanent household credential in circulation.
If you already manage Aqara devices, reuse compatible infrastructure where it supports the intended task. For a new installation, include the required controller or hub in the budget before comparing the locks' sticker prices.
Should a U50 owner replace it with U100?
Keep U50 if Home Key, codes and its existing management routine work for everyone. Replacing the complete lock simply to add a method nobody regularly uses is difficult to justify. Choose U100 when fingerprint entry addresses a recurring annoyance or a particular user’s needs.
Both document automatic locking after the door closes and emergency power options, so these should not be counted as exclusive U100 advantages. Both also use replaceable AA batteries. The different advertised battery durations are conditional manufacturer estimates, not a matched test of real-world endurance.
Before either purchase, check the exact door and deadbolt fit, including the strike alignment. Smart features cannot cure a bolt that binds mechanically. After fitting, test normal entry, guest access and the backup method with the household. Our comparison is based on official functions and prerequisites, not a security or durability trial.
What are the checked package prices?
The checked Aqara US lock-only listings are $149.99 USD for U50 and $189.99 USD for the Gray U100. The listed difference is $40.00. This is not a matched color or hub-bundle comparison. We would pay the extra for fingerprint entry when it would be used regularly; Apple home-key access alone is already shared. Tax, shipping and promotions may change checkout totals.
Home Key and codes are already convenient
Start with U50, or keep the one you own. Its useful entry methods should not be discounted because another model adds a fingerprint reader.
A regular user wants phone-free touch entry
Choose U100 when the fingerprint reader solves that daily task. Include the actual hub requirements if remote code management or integrations are part of the purchase.
Frequently asked questions
Can U50 use Apple Home Key?
Yes. Aqara documents tap-to-unlock with a compatible iPhone or Apple Watch. U100 adds fingerprint access, but buying it is not necessary simply to obtain the Home Key method described for both products.
Does U100 require a hub for remote password management?
Its official page says setting and managing passwords remotely through Aqara Home requires an Aqara Zigbee hub. Separate that connected management task from using an already configured keypad, fingerprint or physical key at the door.
Is fingerprint entry the best method for guests?
Not necessarily. A temporary or scheduled code may fit an occasional visit better than fingerprint enrollment. Choose around the duration of access and the person managing it, rather than treating the most elaborate entry method as the default.
Which model would you keep if it already works?
Keep U50 when the existing entry methods meet the household’s needs. U100 is a targeted replacement for someone who will use fingerprint access often enough to justify buying and configuring another complete lock.
Official sources
Aqara Smart Lock U100: checked exact-model source and conditions — checked 2026-10-05
Aqara Smart Lock U50: checked exact-model source and conditions — checked 2026-10-05