
Yale Assure Lock
Score: 92/100
eufy FamiLock S3 Max
Score: 92/100Rankings

The Yale Assure Lock 2 is a high-end smart deadbolt offering Commercial Grade 2 security with extensive smart home integration and fingerprint access. Its main trade-off is the need for a separate Wi-Fi module to unlock remote features, which adds to the initial cost and complexity. It is best suited for tech-savvy homeowners who want centralized control and guest management capabilities.

The eufy FamiLock S3 Max is a high-security, 3-in-1 smart lock featuring palm vein recognition and a built-in 2K camera. Its primary strength lies in its age-independent biometric access and Grade 1 security certification. It is best suited for multi-generational households and security-conscious users seeking a hub-free, Matter-compatible solution.
| Attribute | ![]() | ![]() |
|---|---|---|
12 monthsbest | 9 months | |
2.25 inchesbest | — | |
15 feetbest | — | |
140 °Fbest | -22 °F |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Power & Battery(2) | ||
Battery Life (months) | 12 months | 9 months |
Battery Type | AA Alkaline | Rechargeable Lithium |
Support & Warranty(1) | ||
Warranty Length (years) | Lifetime (Mechanical/Finish), 1 (Electronics) years | years |
Security & Access(4) | ||
Security Grade | Commercial Grade 2 | Grade 1 |
Unlock Methods | Fingerprint, Keypad, App, Watch, Voice, Key | Palm Vein, App, Voice, Password, Physical Keys |
Keypad Type | Touchscreen | Keypad |
Encryption Standard | Advanced Encryption | |
Installation & Compatibility(3) | ||
Door Thickness Compatibility (inches) | 1.75-2.25 inches | inches |
Backset (inches) | Adjustable inches | inches |
Installation Type | Standard Deadbolt | |
Connectivity & Smart Features(3) | ||
Smart Home Integration | Alexa, Google, HomeKit, SmartThings, Hue, Ecobee, Airbnb | Apple Home, Alexa, Google Assistant, SmartThings |
Bluetooth Range (feet) | 15 feet | feet |
Wi-Fi Standard | Wi-Fi 2.4GHz | Wi-Fi 6 |
Build & Durability(4) | ||
Material | Metal | |
IP Rating | IP65 | |
Operating Temperature (°F) | -22 to 140 °F | -22°F to 158°F °F |
Finish | Oil Rubbed Bronze | Black |


Products in the top-left offer the best value (high score, low price).

Professional reviewers highlight the lock's advanced encryption and tamper alarms as strong security features and note that the battery life is surprisingly long despite powering multiple access mechanisms. The modular upgrade capability, allowing users to add Wi-Fi later without replacing the entire lock, is presented as a distinguishing advantage compared to competitors.
Available information indicates positive feedback regarding the long battery life and the variety of access methods. Consumers value the hands-free auto-unlock feature for daily convenience and benefit from the compatibility with existing smart home ecosystems.

Professional reviewers highlight the device's age-independence as its primary benefit, noting that palm vein scanning remains reliable for users with damaged or changing skin where fingerprint readers fail.
There is insufficient consumer feedback data available to determine common praise or recurring complaints. The available sources are primarily manufacturer descriptions and a single professional video review, lacking extensive user testimonials.
“the device's biggest benefit is its age-independence-palm vein scanning doesn't degrade with age like fingerprint scanners”

“security is nearly impossible to fake due to unique vein patterns”

