Aqara Smart Lock U50 vs eufy FamiLock S3 Max
Side-by-side comparison based on published product information. Check Amazon for current price and availability.
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We compare published manufacturer specifications, manuals, support policies, and relevant public guidance. We do not present unpublished laboratory or in-home measurements as our own testing.
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Use the feature table below to match published specifications to your storage, power, and monitoring requirements. We do not assign an overall score without retained independent test evidence.
Aqara Smart Lock U50
Aqara
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Feature comparison
| Feature | Aqara Smart Lock U50 | eufy FamiLock S3 Max |
|---|---|---|
| Connectivity | Bluetooth 5.0 and Zigbee 3.0, NFC; Aqara hub required for remote features and Matter | Built-in Wi-Fi (direct), Matter, Apple Home, Alexa, Google Home, SmartThings |
| Entry methods | Apple Home Key (iPhone or Apple Watch tap), keypad, NFC card, app, physical key | — |
| Certification | BHMA Level 3, zinc alloy body, IPX5 weather resistance | — |
| Door sensing | Built-in gyroscope detects door left open, auto-locks when closed | — |
| Power | 4 AA batteries, up to 6 months, USB-C emergency power port | 15,000 mAh rechargeable pack + 4 AAA backup, up to 5 months, 5V/2A charging |
| Codes capacity | Up to 75 passwords at once (ordinary plus temporary/periodic), 6–10 digits; up to 8 one-time passwords per hour | — |
| Key backup | Physical keys provided; USB-C port for emergency charging | Physical key (published unlock methods include keys) |
| Door compatibility | Most wooden doors 35–55 mm thick; supports all opening directions | Most standard doors 35–55 mm thick |
| Warranty | 12-month limited warranty (Aqara US) | 18 months (36 months for mechanical parts, eufy smart lock warranty) |
| Unlock methods | — | Palm vein, app, voice control, keypad password, physical key |
| Camera | — | 2K HDR, 150° x 150° view (180° diagonal), night vision |
| Display | — | 4-inch interior screen, 1080p |
| Security certification | — | ANSI/BHMA Grade 1, IP65 (-22°F to 158°F) |
| Codes/fingerprints capacity | — | Palm vein profiles for up to 50 family members |