eufy FamiLock S3 Max vs Yale Assure Lock 2 with Wi-Fi
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 We do not present unpublished laboratory or in-home measurements as our own testing.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.
Yale Assure Lock 2 with Wi-Fi
Yale
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Feature comparison
| Feature | eufy FamiLock S3 Max | Yale Assure Lock 2 with Wi-Fi |
|---|---|---|
| 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 | — |
| Connectivity | Built-in Wi-Fi (direct), Matter, Apple Home, Alexa, Google Home, SmartThings | Built-in Wi-Fi (2.4GHz) plus Bluetooth, no separate bridge required |
| Security certification | ANSI/BHMA Grade 1, IP65 (-22°F to 158°F) | ANSI/BHMA Grade 2, IPX5 weather rating |
| Power | 15,000 mAh rechargeable pack + 4 AAA backup, up to 5 months, 5V/2A charging | 4 AA batteries, up to about a year, 9V emergency contacts |
| Codes/fingerprints capacity | Palm vein profiles for up to 50 family members | — |
| Key backup | Physical key (published unlock methods include keys) | Keyed model with KW1 5-pin keyway, backup key included |
| Door compatibility | Most standard doors 35–55 mm thick | Door thickness 1-3/8 to 2-1/4 in; backset 2-3/8 or 2-3/4 in; face bore 2-1/8 or 1-1/2 in (adapter for small bore included); edge bore 1 in |
| Warranty | 18 months (36 months for mechanical parts, eufy smart lock warranty) | Lifetime limited mechanical and finish warranty for the original purchaser at the original installation; 2-year electronics |
| Entry methods | — | Pushbutton keypad code, Yale Access app, physical key |
| Access codes | — | Up to 250 shareable, schedulable codes |