Compare Aqara U50 Smart Lock vs eufy Video Smart Lock S330

The log feature earned praise because it lets reviewers see when people lock and unlock the door and helps track comings and goings.

Access logs were useful for seeing who came and went and which credential unlocked the door.

Alarm and sound controls are useful and adjustable, but one reviewer found the default voice volume very loud and hub-dependent to change.

The Aqara app is viewed as powerful, especially for automations, status checks, and advanced settings, with repeated praise for its breadth of options.

The app was usually described as smooth, easy, useful, or user-friendly across reviews.

Auto-lock is one of the U50's clearest strengths, with reviewers praising improved behavior, passage-style controls, and dependable nighttime locking.

Auto-lock was valued for peace of mind, though one reviewer cautioned against using timed auto-lock without reliable door-position awareness.

Battery feedback was positive overall, with reviewers calling the life a thumbs up, appreciating ordinary AA batteries, and noting useful low-battery warnings.

Battery life was generally praised as long-lasting, though full charging can take several hours.

Bluetooth is a backup and low-power option, but reviewers consistently preferred Zigbee or hub-based connections for faster, steadier response.

Build quality generally impressed reviewers through sturdy materials and solid feel, though one noted some cheaper-feeling plastic elements.

Reviewers consistently praised the heavy, metal-feeling construction and durable build.

Camera and doorbell performance was generally strong, especially video clarity, but motion timing, distance, and visitor button clarity were recurring caveats.

Door-sense split reviewers: one was impressed by the built-in sensor, while another liked the idea but found it not reliable enough for exact door position.

Door-sense evidence was mixed: departure detection was useful, but one reviewer criticized the lock for not knowing whether the door was open.

Door fit received positive but limited evidence: one reviewer said it worked in many doors and was not hard to install.

Door fit was context-dependent: some installations worked smoothly, while shallow strike plates, alignment, and size constraints caused problems.

Aqara's updated periodic passcode controls were praised as a meaningful improvement that brought the lock in line with other manufacturers.

A post-review feature addition impressed one long-term reviewer by making live-view unlocking more convenient.

The missing fingerprint reader was the biggest tradeoff versus the U100; some reviewers missed it, while others accepted it as part of the lower price.

Fingerprint performance was strongly positive in most reviews, but one reviewer had repeated failed reads.

Guest access is a major strength, with praise for multiple codes, temporary or periodic access, NFC access, and practical use for family, visitors, dog walkers, and Airbnb hosts.

Guest access was a standout use case, with reviewers liking temporary access, contractor use, and removable access.

Hub feedback was mixed: some Apple Home users can avoid an Aqara hub, but several reviewers disliked needing one for full features, volume controls, or broader integrations.

The required bridge/chime was viewed positively when it improved chime, storage, or camera-feed experience.

Design opinions were mixed: reviewers liked the modern black look and sleek layout, but several called it bulky, plain, hard to read from a distance, or limited in color options.

Design was generally liked for its sleek or elegant look, though its large size stood out as a drawback.

Installation and setup were consistently praised as easy, fast, and approachable, though there were isolated caveats about door fit and instructions.

Installation was often described as easy or manageable, but door fit and alignment created trouble for some reviewers.

Jam or abnormal-deadbolt feedback was positive in limited testing, with the lock alerting the reviewer when the door did not latch properly.

One reviewer found jam reporting annoying because a calibration issue made the app keep showing the lock as jammed.

Physical key backup and rekeying were praised, especially the hidden keyhole and the convenience of matching existing keys.

The keypad earned strong marks for lighting, large numbers, easy code entry, and fast response, despite a few wake-up quirks.

Keypad and touchpad feedback was mostly positive, though one reviewer had wake-up/tap responsiveness issues.

Unlocking was consistently described as quick, especially with HomeKey, keypad, and improved hub/Matter response paths.

When working well, unlocking was described as instant or very fast, especially through fingerprint recognition.

The locking mechanism was praised in limited evidence for moving smoothly once installation was aligned correctly.

Motor feedback was split: one long-term reviewer found it solid, while another warned that small alignment resistance could stop locking.

Reliability feedback was strong: the lock kept working without the hub, worked smoothly with Apple devices, and automatically locked as expected.

Reliability was mixed, ranging from flawless and better-than-prior locks to failures when alignment or one-touch locking was imperfect.

Notifications were useful to reviewers for lock activity, people coming home, low battery, and related automation triggers.

Notifications were mostly praised as quick and useful, but some reviewers reported missed or delayed motion events.

Residential security was treated as adequate rather than premium, with one reviewer saying the lock was good enough for most homes.

Physical security impressions were positive, centered on wanting a sturdier alternative to flimsy plastic doorbells.

The hidden keyhole cover was praised as an extra security measure against casual lock-picking visibility.

Remote access was mixed: it gave peace of mind when working, but some reviewers disliked Bluetooth limitations or slower Home app control.

Remote access was a clear strength, with reviewers valuing lock control from the app while away.

Security/encryption evidence was limited but noted an encryption message before streaming, alongside privacy caution.

Smart-home support is a major selling point, with praise for HomeKey, HomeKit, Matter, Alexa, Google, and broad ecosystem flexibility, tempered by hub/Bluetooth tradeoffs.

Smart-home integration was mixed because Alexa/Google support was useful, but reviewers noted the lack of Apple HomeKit, IFTTT, or Matter.

Touch input is mostly good, especially swipe-to-lock, but reviewers noted that waking the panel before entry can be mildly confusing.

Touchscreen feedback was split between responsive operation and needing repeated taps to wake it.

User management is useful for household and guest codes, though Apple Home controls were described as bare-bones compared with Aqara's app.

User management evidence was positive, especially around quickly adding additional users.

Reviewers strongly agreed that the U50 is excellent value, repeatedly calling it affordable, a great deal, and one of the best budget HomeKey smart locks.

Most reviewers considered the price fair for the combined lock, camera, doorbell, fingerprint, and no-extra-fee package.

Voice control had limited but positive outcome evidence, with a reviewer showing a voice-assisted unlock working after PIN confirmation.

Voice control performed well in the one review that tested it directly.

Warranty evidence was limited and negative: one reviewer warned that replacing the cylinder could leave the user on their own with warranty coverage.

Weather resistance was viewed as sufficient for outdoor use, though one review noted the lower dust rating as a cost-cutting compromise.

Wi-Fi was a recurring limitation because the U50 lacks built-in Wi-Fi and needs a hub for remote access and fuller smart-home features.

Wi-Fi performance had limited but strong evidence, with one reviewer reporting no live-view latency.