Compare eufy Video Smart Lock S330 vs Aqara U50 Smart Lock

Reviewers who discussed logs found useful entry history, including how the lock opened and which fingerprint was used, with one transcript explicitly describing an activity log.

Reviewers used the lock logs to check usage events, access-code use, and lock/unlock history, with one review noting roughly 30 days of stored logs.

The included chime can get loud enough for household alerts across rooms or floors, though reviewers discussed chime volume rather than a separate siren.

The lock’s speaker and sound controls drew mixed-positive notes: reviewers found adjustable volume and alarms useful, but one found the default speech very loud.

The app was generally praised as smooth, clean, user-friendly, and feature-rich, with live video, settings, and remote controls accessible from the phone.

The Aqara app was treated as useful for configuration, calibration, settings, and extra controls, though some app-side features depend on hub setup.

Auto-lock was repeatedly seen as a useful peace-of-mind feature, with timing and schedule controls, although one reviewer warned it may lock when the door is open.

Auto-lock was repeatedly supported and generally liked, especially when tied to door-closed detection, with reviewers noting improved behavior over earlier Aqara models.

Wrong-try protection and passcode lockout were clearly supported, giving the lock a configurable response after repeated failed attempts.

Failed-attempt lockout is supported through keypad lockout after repeated wrong passcodes, adding a practical protection against code guessing.

Backset support is well documented for common 2 3/8-inch and 2 3/4-inch sizes.

Backset compatibility was supported for common deadbolt setups, with reviewers noting the lock supports two backset depths and common U.S. dimensions.

Battery feedback was strongly positive overall, with multiple reviewers citing several months of use, USB-C charging, and only occasional recharges.

Battery evidence was mostly positive: the lock uses four AA batteries, reviewers cited roughly six-month life, and USB-C emergency power was repeatedly noted.

Bluetooth is present through the included bridge, which PCMag says contains both Wi-Fi and Bluetooth radios.

Bluetooth works as a core or backup connection, but reviewers described it as slower or flakier than Zigbee or hub-based setups in some Apple Home scenarios.

Build quality was consistently described as sturdy, metal, heavy-duty, or durable, although the hardware is also physically large.

Build quality was mostly praised as solid, heavy, and zinc-alloy, although multiple reviewers also called the exterior bulky.

Camera and doorbell performance were usually praised for 2K clarity and useful detection, but a few reviews reported missed, delayed, or weaker night events.

Camera and doorbell tie-ins were supported through Aqara ecosystem integrations, especially seeing a doorbell or camera feed near lock controls and unlocking from that context.

Door-sense style features are mixed: one review praised leaving detection, while another said auto-lock did not know whether the door was open or closed.

Door-sense is built in through a gyroscope and supports auto-lock, but reliability was mixed because one reviewer preferred adding a separate door sensor.

Deadbolt fit is the biggest installation caveat: it replaces a standard deadbolt but can be sensitive to strike-plate depth, alignment, and size constraints.

Door compatibility evidence focused on standard single-cylinder deadbolts and standard U.S. doors, with latch-style locks excluded.

SafeWise explicitly noted that the existing deadbolt can be reused if the Eufy deadbolt does not fit flush.

Existing hardware reuse is mixed: the U50 can be rekeyed to match existing 5-pin keys, and one reviewer reused a strike plate, but it replaces the full lock.

At least one long-term reviewer observed a useful live-view unlocking feature added after the original review.

Feature updates were supported by Aqara’s expanded passcode controls, especially more granular periodic passcode scheduling since earlier U100 coverage.

Fingerprint performance was split: several reviewers called it fast and accurate, while PCWorld had repeated recognition problems.

Every direct fingerprint note was negative or caveated because the U50 removes the U100 fingerprint reader, even though reviewers accepted the cost tradeoff.

Finish feedback was mixed: reviewers liked fingerprint-hiding and lack of visible wear, but one found the dark interior status harder to read and another worried about cover longevity.

Geofencing or phone-proximity unlock was not available in the reviewed app experience; one reviewer specifically wished for it.

Guest access is a strength, with temporary passcodes, schedules, and easy programming mentioned across reviews.

Guest and access-code support was one of the strongest areas, with temporary, periodic, one-time, offline, and individual passcodes repeatedly described.

The bridge/chime is central to the system: reviewers described it as included, useful for indoor chimes and storage, and in one case mandatory.

Hub requirements were context-dependent: Apple Home/HomeKey can work without an Aqara hub, but hubs unlock remote Aqara controls, Matter, broader platforms, and richer settings.

Installation was mostly manageable and often easy, but several reviewers noted alignment, strike-plate depth, or two-handed handling challenges.

Installation was usually described as easy on standard deadbolts, but several reviewers warned about door alignment, confusing instructions, or possible chisel/modification work.

Jam detection can be frustrating when calibration or strike-plate depth is off, with one reviewer saying the app kept showing jammed despite a secure bolt.

Jam or abnormal latch detection was supported by reports of smooth alignment after adjustment and app notices when the deadbolt was abnormal.

Key backup is well covered: reviewers repeatedly noted the hidden or included physical key option for emergencies.

Physical key backup is consistently present and useful, with hidden keyholes, included keys, rekeying, and emergency fallback discussed across reviews.

The keypad generally worked well and supports PIN entry, though one review found the touchscreen sometimes needed extra wake-up taps.

The keypad was widely liked for lighting, visibility, swipe/touch locking, and everyday code entry, though it usually needs to be woken before typing.

Keyway quality was a strength because reviewers repeatedly noted rekeying, though one cautioned that replacement cylinders may be non-standard and could affect warranty.

Lock and unlock speed was strong in favorable tests, especially through fingerprint access, with instant or very quick operation reported.

Lock/unlock speed was generally strong for keypad and HomeKey, while Bluetooth app control was sometimes slower than Zigbee or Thread alternatives.

The motor can be sensitive to deadbolt alignment; one review warned it may fail to lock if the motor struggles.

The motor and mechanical movement were described as smooth and quick once installed and aligned correctly.

Locking reliability ranged from flawless or year-long solid use to sensitivity when alignment was imperfect or one-touch locking failed.

Basic locking reliability was good in the evidence, with the lock continuing to work without hub help and behaving similarly to the U100 in long-term use.

Notifications were generally fast and useful for activity, motion, lock/unlock events, and thumbnails, though one review noted delayed motion recording.

Notification support is useful for status, warnings, and automations, though the evidence focuses more on availability than long-term notification accuracy.

Physical resistance was not attack-tested, but the lock offers extra screws for added security and reviewers described sturdy hardware.

Physical attack resistance evidence was limited but direct, with one reviewer citing BMHA grade three as the intended residential-security level.

Remote access was a clear strength, with reviewers locking or unlocking from the app, even away from home.

Remote access is available, but the path depends on setup: reviewers tied it to Apple Home hubs, Aqara hubs, or app/platform control away from home.

Security features include scramble passcodes, wrong-try protection, and an encryption message, while one review also mentioned broader Eufy privacy concerns.

Security features include AES encryption, lockout behavior, fingerprint-smudge-resistant finish, access restrictions, and obvious-code warnings in Apple Home.

Alexa and Google support were consistently reported, while reviewers also consistently noted missing HomeKit, IFTTT, and Matter support.

Smart-home integration is a major strength, with repeated support for Apple Home/HomeKey, Matter via hub, Alexa, Google Home, IFTTT, and Aqara automations.

Touchscreen and touchpad feedback was mixed, ranging from PCMag's responsive touchpad to PCWorld's wake-up issues.

The touch surface was functional and sometimes convenient, but reviewers noted the need to wake the panel before entry.

User access management is strong, with high user/fingerprint limits, individual codes, and easy additional-user enrollment.

User access management is strong, with passcodes, guest access, user-specific automations, and access management in Aqara or Apple Home.

Reviewers generally found the price reasonable for the all-in-one lock, doorbell, camera, local storage, and no-fee value, while still calling it pricey.

Value was one of the strongest points: reviewers repeatedly framed the U50 as affordable for a HomeKey-capable lock, with the main price caveat being hubs.

Voice control works through Alexa and Google according to multiple reviews, but Apple ecosystem support is absent.

Voice control is supported through smart assistants, but reviewers tied some voice-assistant features to hub or platform setup.

Warranty and support evidence was narrow and cautionary, centered on one reviewer warning that cylinder replacement could void warranty coverage.

Weather resistance is supported by an IP65 waterproof rating and operating-temperature claims in the reviewed materials.

Weather resistance was generally adequate, with IPX5 or IP65 references and broad temperature claims, though one review noted the U50 lacks dustproofing.

Wi-Fi works through the bridge and supports remote use, but reviewers noted 2.4GHz-only setup and dependence on the bridge/chime connection.

Wi-Fi evidence was mostly a limitation because several reviewers said the lock lacks built-in Wi-Fi, with hub or Apple Home bridging needed for remote features.