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| Feature | Aqara Smart Lock U200 | Eufy FamiLock S3 Max | Winner |
|---|---|---|---|
| Price | $169.99 | $329.99 | Aqara Smart Lock U200 |
| Rating | 2.7 | 4.2 | Eufy FamiLock S3 Max |
| Warranty | 1 year | 1.5 years | Eufy FamiLock S3 Max |
| Battery Life | 6 months | 4 months | Aqara Smart Lock U200 |
| Connectivity | Bluetooth, Thread Protocol | 2.4 GHz WiFi | Aqara Smart Lock U200 |
| Lock/Unlock System | Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key | Remote, Passcode, Physical Key | Aqara Smart Lock U200 |
| Doorbell | NO | YES | Eufy FamiLock S3 Max |
| Weather Resistance | IPX5 | IP65 | Tie |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| One-Time Password | YES | YES | Tie |
| Periodic Password | YES | YES | Tie |
| Anti-peep Password | YES | YES | Tie |
- + Price: $169.99
- + Battery Life: 6 months
- + Connectivity: Bluetooth, Thread Protocol
- - Rating: 2.7 vs 4.2
- - Warranty: 1 year vs 1.5 years
- + Rating: 4.2
- + Warranty: 1.5 years
- + Doorbell: YES
- - Price: $329.99 vs $169.99
- - Battery Life: 4 months vs 6 months
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Aqara Smart Lock U200
- Eufy FamiLock S3 Max
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Frequently Asked Questions
Which is better overall: Aqara Smart Lock U200 or Eufy FamiLock S3 Max?
Aqara Smart Lock U200 wins with its lower price, longer battery life, native seven-platform support and richer unlock methods including Apple Home Key and fingerprint. Eufy FamiLock S3 Max counters with a higher rating, longer warranty and its integrated video doorbell and camera.
What is the biggest difference between Aqara Smart Lock U200 and Eufy FamiLock S3 Max?
The camera. The Eufy packs a 2K HDR video doorbell, night vision, motion detection, local storage and an interior viewing screen into the lock itself. The Aqara is a focused smart lock with no video features but more unlock options.
How do they connect to smart homes?
The Aqara Smart Lock U200 uses Matter over Thread (a Thread border router is required) and reaches every platform natively, including IFTTT. The Eufy FamiLock S3 Max has built-in Wi-Fi, no hub needed, and reaches Google, Alexa, HomeKit and SmartThings via Matter.
Which unlock methods does each support?
The Aqara Smart Lock U200: fingerprint, keypad, NFC, Apple Home Key, app, and physical key. The Eufy FamiLock S3 Max: palm-vein recognition, keypad, app, and physical key, with no fingerprint, NFC or Home Key.
Who should buy Aqara Smart Lock U200?
Choose Aqara Smart Lock U200 for the best-connected retrofit deadbolt at a lower price, especially in Apple Home where Home Key shines. Some owners report calibration quirks and mechanical wear over time.
Who should buy Eufy FamiLock S3 Max?
Choose Eufy FamiLock S3 Max to replace lock, doorbell and porch camera with one device: palm unlock that works in rain, 2K video with no monthly fee, and a rear screen ideal for kids and elderly family, backed by an 18-month warranty.
Compare all 46 Door Locks side by side
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