Compare eufy Video Smart Lock S330 vs Aqara Smart Lock U100

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 consistently found the U100 useful for activity visibility: the Aqara app shows logs, unlock methods, and user-specific entries, though HomeKit logging is less detailed.

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 includes configurable prompts and alarms, with reviewers liking the door-not-locked and failed-attempt alerts, although one noted the speaker is not especially 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 is powerful and clear for setup, logs, users, and settings, but long-term feedback included slow status updates and unreliable alerts in some cases.

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 is feature-rich, configurable, and often praised, but reviewers repeatedly flagged it as beta or occasionally imperfect, especially when latch alignment is off.

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

Failed-attempt lockout is strongly supported: reviewers describe the lock freezing keypad/fingerprint/NFC access or timing out after repeated wrong attempts.

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

Backset support is broadly compatible for standard North American deadbolts, with 2-3/8 and 2-3/4 inch backsets noted, but fit still depends on the door hole and strike alignment.

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

Battery life is generally expected to be good at about eight months, with one six-month test showing strong remaining life, but another long-term reviewer reported faster drain and weak alerting.

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

Bluetooth works for nearby control and setup, but it is also a limitation because remote control, broader integrations, and sometimes faster Zigbee operation require hubs.

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

Reviewers mostly praised the heavy zinc/alloy exterior and sturdy feel, with only minor concerns around plastic inner parts or cosmetic wear.

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

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 gyroscope/accelerometer detection rather than a separate magnet, and reviewers liked the idea, though one found it only about 80% accurate.

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

The U100 is designed as a standard deadbolt replacement and fit several doors easily, but reviewers warned that nonstandard holes or other lock types may require work or be incompatible.

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

Some existing hardware can be reused when alignment is already correct, but most installs still involve replacing the deadbolt and possibly adjusting the strike or frame.

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

Firmware and feature updates appear meaningful, with reviewers noting improving performance and promised additions, but update workflows and beta features were not always polished.

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

Fingerprint access was one of the strongest areas, with many reviewers calling it fast, accurate, reliable, and their preferred unlock method.

Finish feedback was mixed: reviewers liked the coating and fingerprint resistance, but long-term use revealed scratches and design/appearance objections.

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

Location-based automation exists, but reviewers treated it cautiously because it is beta/lab-style and requires always-on location access or app automation setup.

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

Guest and temporary codes are useful, with one-time, periodic, and passcode-sharing options, but several reviewers wanted deeper recurring schedules or fewer per-user limits.

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

A hub is optional for basic HomeKit/Bluetooth use but effectively required for Matter, Alexa, Google, remote Aqara control, and richer automations.

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 for standard deadbolt replacements, aided by app/video guidance, though alignment, cover removal, and older doors can add friction.

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.

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

Physical keys and USB-C emergency power provide important fallback access, but one long-term reviewer experienced an offline lock where only the physical key worked.

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

The keypad is generally bright, readable, and responsive, though some reviewers disliked needing to wake it or confirm a code with the lock button.

Keyway feedback is the weakest physical-access area: the hidden keyhole is useful, but multiple reviewers reported re-keying is difficult or effectively impossible.

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

Unlock speed is a standout strength, especially fingerprint, Home Key, and app response, although some app/HomeKit commands can take a few seconds.

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

The motor is perceived as strong and fast, with one reviewer explicitly praising torque and calling it the fastest smart lock they had used.

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

Reliability is mixed: many reviewers had flawless or consistent testing, while long-term reviews reported offline states, wrong status, or auto-lock latch issues.

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

Notifications are useful for unlocks, status, and door-left-open events, but one reviewer reported that app alerts did not always arrive reliably.

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

Physical security evidence is solid for a consumer smart lock, with BHMA Level 3 references and ramming-force durability cited, though this is not a high-security commercial rating.

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

Remote access works well when paired with the right HomeKit or Aqara hub, but reviewers repeatedly emphasized that the lock itself lacks direct remote capability.

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

Security features were praised, especially local fingerprint storage and AES/end-to-end encryption, with reviewers treating biometric handling as reassuring.

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

Smart-home integration is broad, covering HomeKit/Home Key, Siri, Alexa, Google, IFTTT, Matter via hub, and Aqara automations, though hub requirements add complexity.

Tamper-style protection centers on wrong-code/fingerprint attempt handling: reviewers cite alarms, keypad freezing, and lockout behavior after repeated failures.

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

The touchscreen/keypad surface is well-supported by reviews, with touch-screen, touch-panel, and matte touchscreen descriptions tied to good readability and responsiveness.

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

User management is strong for households and guests, with user roles, fingerprints, passcodes, and remote password management called out across reviews.

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 is one of the clearest positives, especially for Apple Home Key users, although required hubs can raise the practical total cost.

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

Voice control is available through Siri and assistants, but reviewer evidence is mixed because Alexa setup was described as a struggle in one review.

Support and warranty evidence is limited but mixed: support reportedly issued updates for offline problems, while re-keying may void the warranty.

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

Weather resistance is well-supported by IP65 ratings and outdoor-use comments, with reviewers citing resistance to rain, dust, and temperature extremes.

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

The U100 lacks built-in Wi-Fi; Wi-Fi-style remote features come through an Aqara hub or Apple home hub rather than the lock itself.