Fit My Door Lock product guide
Aqara Smart Lock U100 Fingerprint Deadbolt, Gray (SDL-D01)
Apple households already running an Aqara Zigbee hub
A fingerprint and keypad deadbolt with Apple Home Key, NFC card support and a mechanical key, running on four AA batteries with a USB-C emergency port. Bluetooth and Zigbee do the talking, so remote access and voice control need an Aqara hub, and the manual lists no Thread or Matter.
Listing checked . Confirm the model, included parts and availability before ordering.
Published specifications
- Maker: Zigbee 3.0, Bluetooth 5.0 and NFC; no Wi-Fi listed in the manual
- Maker: Aqara Zigbee 3.0 hub required for remote and voice unlocking
- Maker: door thickness 35-55 mm; backset 2-3/8 in or 2-3/4 in
- Maker: up to 50 fingerprints, 75 passwords, 50 accounts
- Maker: four AA batteries, eight months average in Aqara's own test
- Maker: front panel IP65; the indoor panel is for indoor use only
Fit and limits
Strengths
- Apple Home Key works from an iPhone or Apple Watch after HomeKit setup
- USB-C emergency port on the outside plus two mechanical keys
- Phantom passwords let you pad a code to twenty digits against onlookers
Caveats
- Remote access and voice control need an Aqara hub that is not included
- Apple Home only setup disables fingerprint recognition and auto-lock
- Listing title says Matter over Thread; the manual lists neither
Nine documented ways in, and what each one needs
Aqara's FAQ lists nine unlocking methods: fingerprint, password, HomeKit or Siri, the Aqara Home app, Google Home, Amazon Alexa, an NFC card, an integration unlock through the Aqara G4 doorbell, and a mechanical key. That is a long list, but each one carries a condition worth reading before you buy.
Aqara Home and HomeKit support short-range Bluetooth unlocking on their own. Remote unlocking through Aqara Home, Google Home or Alexa requires a supporting Aqara gateway at home. Siri voice unlocking needs an Apple hub, meaning a HomePod, iPad or Apple TV, and the FAQ ties Google and Alexa unlocking to the same Aqara gateway requirement.
Capacity is generous. The FAQ gives up to 50 fingerprints, up to 75 passwords at once including ordinary and periodic ones, up to eight one-time passwords generated per hour, and up to 50 user accounts, either 50 admins or one admin and 49 ordinary users. Passwords are six to ten digits, and a phantom password lets you pad them out to twenty digits so onlookers cannot read the real code.
The hub question, and what the manual says about Thread
The manual's specification block lists the wireless protocols as Zigbee, Bluetooth 5.0 and NFC. It does not list Wi-Fi, Thread or Matter, and the FAQ repeats that the lock uses Bluetooth 5.0 and ZigBee 3.0. Amazon's structured connectivity field also says Bluetooth and Zigbee.
The Amazon title, however, says Matter Over Thread. Nothing in either maker document we read supports that, and we are not going to reconcile the two for you. If Matter or Thread is the reason you are considering this lock, ask Aqara in writing whether this exact model and firmware provide it before ordering.
The hub requirement is unambiguous. The FAQ says binding needs an Aqara Zigbee 3.0 hub and names the compatible list as the G2H Pro Camera Hub, G3 Camera Hub, E1 Hub, M1S Hub, M1S Gen 2 Hub and M2 Hub. It gives a communication range of roughly 275 to 393 inches through one wall and advises getting closer through several. No hub is included with this lock.
Setting it up without an Aqara account costs you features
The manual states the trade-off plainly. You need to download the Aqara Home app and register an account, and it says no such operations are required if you connect the product directly with the Apple Home app, but that unique features such as fingerprint recognition and auto-lock will then not be available.
In other words the HomeKit-only path gives you lock, unlock, automation and Apple Home Key, and nothing else. Fingerprint enrolment and the other features the manual names as unique to the lock go through the Aqara Home app and its account.
Apple Home Key works once the lock is added to HomeKit, letting you unlock by tapping an iPhone or Apple Watch. It needs iPhone XS or later on iOS 15 or later, or Apple Watch Series 4 or later on watchOS 8 or later, and automation away from home needs a HomePod, iPad or Apple TV acting as a hub.
Fit, materials and where the IP65 rating actually applies
The FAQ says the cylinder is compatible with most wooden doors between 35 and 55 millimetres thick, and that all door-opening directions are supported: left, right, inward and outward. Backset must be either two and three eighths inches or two and three quarters, and the supplied latch is adjusted by rotating it 180 degrees for the longer setting.
Read the weather answer carefully. Aqara says the front panel, the keyboard side, is IP65 waterproof, but the indoor panel can only be used indoors. So this is not a lock for a gate or an outbuilding where both sides see weather. Operating range is minus 35 to 66 degrees Celsius with humidity from zero to 93 percent.
Materials are broken down in the FAQ: a matte IML touch panel, a zinc alloy outdoor panel with a frosted coating, and a plastic indoor panel with a metallic coating. The lock body is a 60 or 70 millimetre deadbolt with an alloy mechanical cylinder. Aqara says replacing that cylinder yourself is treated as agreeing to waive its maintenance service.
Batteries, power loss and the certification wording
Power is four LR6 AA batteries, supplied. Aqara puts average battery life at eight months, and is specific about the test: measured in its own laboratory with LR6 AA cells, simulating eight door openings and eight auto-lockings a day at 25 degrees Celsius. It warns performance declines in cold conditions.
If the batteries run out, the FAQ gives two routes: from outside, power the lock through the emergency USB-C port on the outer panel; from inside, just change the batteries. The manual adds that once the battery is low, verification and door opening will fail if you let it run flat, so replace the cells at the first warning.
On certification the FAQ lists FCC, tested to BHMA Grade 3, HomeKit certification, CA65, and IP65 with 200,000 sets of auto locking and unlocking tests. A later answer words it as tested to the same requirements as BHMA Class 3. Note that both phrasings say tested rather than certified, and no certificate was read for this page.
One contradiction in Aqara's own FAQ, and the keypad lockout
Aqara's FAQ answers the door-state question twice and the answers do not agree. One page says the U100 currently only supports lock status detection, meaning locked, unlocked and lock failure, and that a future update may add door status detection. Another page describes the anti-tailgating feature by saying the lock can detect the door is closed and lock immediately.
We are reporting both as written rather than choosing one. If your reason for buying is an auto-lock that will not fire while the door is standing open, ask Aqara which behaviour the current firmware has. The listing separately credits auto-lock to a built-in gyroscope and mentions a Do Not Disturb mode.
One more current-behaviour note: the FAQ says the keypad is not locked out after repeated failed password, fingerprint or NFC attempts by default at the moment, but that a future update will introduce a lockdown, during which apps or the mechanical key will still work. If a brute-force lockout matters to you, that is a question for Aqara rather than an assumption.
Check the current listing
Confirm the model, included parts and availability before ordering.
Primary sources
- Aqara Smart Lock U100 user manual, supplied with the listing
- Aqara Smart Lock U100 FAQ document, supplied with the listing
Primary sources checked .
Compare with
- Schlage Encode Smart WiFi Deadbolt, Century Trim, Matte Black
Standard doors that need remote access without a bridge
- August Wi-Fi Smart Lock, 4th Generation, Silver (AUG-SL05-M01-S01)
Renters and anyone who wants to keep their existing keys
- Yale Assure Lock 2 Keypad with Wi-Fi, Black Suede (YRD410-WF1-BSP)
Standard US doors that pass Yale's printed door checker
- eufy Security Smart Lock C220 Fingerprint Deadbolt (T8506)
Standard US deadbolt doors where guests need code or finger entry
- Wyze Lock Bolt v2 Fingerprint Smart Deadbolt (WLCKB2)
Wyze video doorbell owners who want fingerprint entry
- ULTRALOQ Bolt SE Fingerprint Smart Deadbolt (UUL-BOLT-BK)
Standard US doors in a Matter or Apple Home household
Side-by-side pages, this model next to: Yale Assure Lock 2 Keypad with Wi-Fi, Black Suede (YRD410-WF1-BSP), eufy Security Smart Lock C220 Fingerprint Deadbolt (T8506), August Wi-Fi Smart Lock, 4th Generation, Silver (AUG-SL05-M01-S01), Wyze Lock Bolt v2 Fingerprint Smart Deadbolt (WLCKB2), Schlage Encode Smart WiFi Deadbolt, Century Trim, Matte Black, ULTRALOQ Bolt SE Fingerprint Smart Deadbolt (UUL-BOLT-BK).