Best for Alarm/siren loudness (if included)
Aqara Smart Lock U100
4.0 feature score
Highest scored product for this feature based on supporting review evidence.
Best Aqara Smart Home for Alarm/siren loudness (if included)
Alarm/siren loudness (if included) Decision Dashboard
Safest pick
Aqara U50 Smart Lock
3.0 feature score
Balances feature score, supporting reviews, and overall product strength.
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The built-in speaker/alarm was viewed as useful rather than extremely loud, with reviewers appreciating open-door and warning alerts.
Pros: Lock/unlock speed, Fingerprint
Cons: Keyway quality, Wi-Fi
Alarm and sound controls are useful and adjustable, but one reviewer found the default voice volume very loud and hub-dependent to change.
Pros: Access logs, Value and Price
Cons: Warranty and support, Wi-Fi