
eufy Smart Lock S230
Score: 85/100
eufy FamiLock E34
Score: 92/100Rankings

The eufy FamiLock E34 is a Wi-Fi-enabled smart deadbolt featuring biometric palm vein recognition as its primary unlocking method, offering ANSI/BHMA Grade 1 security. It combines this novel vein-scanning technology with traditional smart home controls, multiple backup authentication methods, and a dual-battery power system for reliability. It is best suited for tech-forward homeowners seeking cutting-edge biometric security and privacy.

The eufy Security Smart Lock S230 is a keyless entry smart lock featuring fingerprint recognition, keypad access, and mobile app control with robust local security features. It offers weatherproofing, extended battery life, and multi-authentication methods designed for residential doors without relying on cloud storage for sensitive data. It is best suited for homeowners seeking keyless entry with multiple authentication methods and prioritizing local security.
| Attribute | ![]() | ![]() |
|---|---|---|
8,640 hoursbest | 5,760 hours | |
— | 50 usersbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Access & Security(4) | ||
Unlock Methods | Fingerprint, Keypad, Mobile App, Physical Key | Palm Vein, Physical Key, Voice Commands, Passcode/Keypad, Smartphone App |
Security Grade | BHMA Certified | ANSI/BHMA Grade 1 |
Fingerprint Capacity (users) | users | 50 users |
Encryption Standard | AES 128-bit | Matter |
Durability & Environment(2) | ||
Exterior Material | Zinc alloy and stainless steel | Black |
Operating Temperature (°C) | -30 to 70 °C | °C |
Power & Battery(2) | ||
Battery Life (hours) | 8640 hours | 5760 hours |
Low Battery Alert | true | |
Features & Convenience(1) | ||
Tamper Alarm | true | |
Connectivity & Smart Home(2) | ||
Smart Home Ecosystem | Alexa, Google Assistant | Apple Home, Google Home, Alexa, SmartThings |
Bluetooth Support | false | true |

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

Consumer Reports and The Host Report evaluate the S230 as a competent smart lock with strong physical security credentials. The lock excels in durability, having been BHMA tested for 30+ years of use, and offers versatile access methods.
Users generally praise the fast fingerprint recognition speed and the intuitive nature of the companion app for remote management. The flexibility of having multiple unlocking options is frequently highlighted as a positive aspect.



Professional reviewers highlight the novelty of palm vein technology as a major differentiator, noting its effectiveness in addressing spoofing vulnerabilities common in fingerprint systems. The dual power system and no-drilling installation are praised for practicality and reliability.
Users appreciate the innovative palm vein technology and the convenience of DIY installation without drilling. The long battery life and backup power system are frequently cited as reassuring features.