Compare Aqara UWB Smart Lock U400 vs eufy Video Smart Lock E330

Reviewers who evaluated event history found it useful for checking clips and seeing who came or went, especially for family awareness.

The Aqara app was seen as useful and feature-rich, but reviewers also flagged setup complexity, a Matter-code issue, and a learning curve for customization.

The app was consistently praised as simple, polished, and useful for setup, live view, lock control, access management, and monitoring.

Auto-lock was broadly praised and often described as reliable or well implemented, though one reviewer found Aqara app close-detection sometimes delayed.

Auto-lock drew strong praise for reliably relocking after a set time and reducing worry about whether the door was left unlocked.

The failed-attempt lockout behavior was viewed as a strong security safeguard when someone keeps entering wrong codes or fingerprints.

Battery feedback was mostly positive for USB-C charging, removable/rechargeable design, and long runtime, tempered by concerns about spare or replacement batteries.

Battery feedback was the most divided area: some reviewers liked the removable rechargeable pack, while others reported short runtime or slow charging.

Bluetooth-only use was judged weak for this lock because reviewers saw the U400's main value in Thread/UWB rather than basic Bluetooth operation.

Build quality was viewed positively, with reviewers describing a step up from earlier Aqara locks and solid, well-made hardware.

Build quality was rated very highly, with reviewers repeatedly describing the lock as metal, sturdy, well made, durable, and high quality.

Camera and doorbell integration was described as practical when paired with Aqara or Apple Home video devices, letting users see visitors and unlock from one screen.

Camera and doorbell performance was generally strong, with sharp 2K video, good night vision, fast loading, and useful two-way features, though field of view and door placement limited some setups.

Door-sense evidence was limited but positive, centered on the built-in gyroscope knowing when the door closes so it can lock without an added sensor.

Door-sense was weakly supported because a reviewer specifically wanted a sensor to know whether the door was open or closed.

Door fit flexibility was helped by adapters/cross-bore support, with reviewers calling the physical fit detail useful for nonstandard openings.

Door compatibility was a major caveat because screen doors, storm doors, deep jambs, and awkward door angles could compromise the camera or overall fit.

One reviewer valued that the lock could mount without the kind of door drilling required by the previous lock, making the install feel friendlier to existing doors.

Existing hardware reuse scored well in the one clear opinionated case, where the lock worked with an existing strike plate and the reviewer called that nice.

Facial recognition was mixed: HomeBase-linked identification worked in one test, while another reviewer wanted face-based unlocking added.

Feature-update evidence was limited but positive, with one reviewer saying Aqara is good about firmware updates.

Fingerprint access was consistently praised as quick, accurate, consistent, or convenient, especially as a backup when UWB is unavailable.

Fingerprint access was one of the strongest areas, repeatedly described as fast, accurate, responsive, convenient, and the preferred unlock method.

The exterior finish earned a positive note for resisting fingerprints better than expected.

Guest access was praised through Home app PIN management and temporary/neighbor-style access options.

Guest access was praised when reviewers could give temporary or remote user access without handing over physical keys.

Hub requirements were mixed: reviewers liked avoiding an Aqara hub in Apple Home, but still emphasized the need for a Thread border router for full functionality.

Hub requirement was mixed because the lock can work without a HomeBase, but one reviewer disliked needing a separate chime when used alone.

Industrial design was the most mixed area: reviewers liked the sleeker, more mature, minimal look, but others called it bulky, plain, or plastic-looking.

Industrial design was well liked, with reviewers calling the lock sleek, compact, sharp, premium-looking, and attractive.

Installation was usually described as straightforward and fast, with several reviewers finishing quickly, though a few noted tight wiring, small screw holes, or a latch-area snag.

Installation and setup were consistently praised as quick, easy, straightforward, foolproof, or among the easiest smart-lock setups reviewers had tried.

Reviewers liked retaining a physical-key fallback, framing it as a useful mechanical backup rather than a compromised smart-only design.

Key override reliability scored well because reviewers appreciated the hidden physical key and backup power options for dead-battery situations.

The keypad was generally usable and responsive, but reviewers also found that it could take extra taps or touches to wake in some cases.

The keypad was viewed positively for reliability, passcode flexibility, and backlighting, although one reviewer treated keypad access as less preferred than fingerprint.

The keyway/cylinder was viewed positively because the reviewer liked that it could be rekeyed rather than forcing a full lock replacement.

Keyway quality was a recurring weakness because multiple reviewers noted the lock cannot be rekeyed or needs a locksmith for extra keys.

Lock/unlock speed was one of the strongest themes, especially with UWB; reviewers described fast reactions, instant Home app response, and few delay caveats.

Lock and unlock speed scored strongly in the one clear opinionated review that called the lock fast and quiet.

The locking motor was praised as smooth and responsive in hands-on use.

Locking reliability was strongly praised, with reviewers repeatedly reporting flawless, rock-solid, or consistently smooth hands-free unlocking.

Locking reliability scored highly where reviewers focused on the smart-lock half, calling it responsive and saying it worked as advertised.

Notifications earned praise for adding Apple Watch/iPhone confirmation and a quick relock option after UWB unlocks.

Notifications were a clear strength, with reviewers describing alerts as nearly instant, responsive, fast, or consistent.

Physical attack resistance drew a caveat: the reviewer appreciated certification but clearly wished the U400 had a stronger Grade 2 rating instead of Grade 3.

Remote access was useful when configured, with one reviewer praising fast remote unlock and another noting Aqara-app remote control needs an Aqara hub.

Remote access was rated very highly because reviewers liked being able to view, unlock, greet visitors, or control the lock from the app remotely.

Security features were praised around UWB precision, encryption-related safeguards, and prevention of unintended inside unlocks or relay-style weaknesses.

Security features such as scramble passcode and failed-attempt protections were praised as sensible, useful, and security-enhancing.

Smart-home integration was a major strength, with reviewers praising Apple Home, Matter over Thread, responsiveness, major ecosystem support, and future-looking compatibility.

Smart-home integration was mixed-positive: Alexa, Google, Apple Watch, and Eufy ecosystem links were appreciated, but lack of HomeKit hurt one review.

Touchscreen evidence was mixed, with one reviewer naming wake-up attempts as the main complaint.

Touchscreen visibility scored poorly in the one clear opinionated review because the keypad and doorbell button were hard to find in the dark.

User access management was positively reviewed for adequate household limits, more granular Aqara controls, and approachable local fingerprint setup.

User access management scored well where reviewers valued adding users, codes, and fingerprints with access rules.

Value sentiment was favorable but conditional: reviewers called it worth the upgrade or routine-changing, while also noting the price can feel high.

Value was mostly positive thanks to all-in-one convenience and savings versus higher-tier models, though one reviewer stressed that the lock is not cheap.

Voice control received limited but positive evidence, with a reviewer saying they wished they had the supported voice-control lock routine at home.

Voice control was positively received, especially Alexa integration, chime support, and hands-free unlocking through assistants.

Weather resistance came across well: reviewers said it could face the elements, and one real-world test cited rain, snow, ice, and no missed performance.

Weather resistance scored strongly where reviewers found the lock handled rain, hot conditions, or outdoor exposure well.

Wi-Fi was mixed-positive: one reviewer saw fast alerts even on weak 2.4GHz Wi-Fi, while another warned experience depends on network strength.