Sifely Smart Lock
Score: 75/100
Kwikset Home Connect 620
Score: 88/100Rankings
The Kwikset HomeConnect 620 is a premium Z-Wave smart lock offering extended range connectivity and robust integration with major smart home ecosystems. Its long-range capabilities and battery efficiency make it ideal for larger homes or those with weak Wi-Fi signals. However, the requirement for a hub and potential bolt jamming issues are notable trade-offs.
The Sifely Keyless Entry Fingerprint Smart Door Lock is a budget-friendly lever-style lock with high user capacity and easy DIY installation. It lacks weather-proofing ratings and emergency power options, limiting its suitability for harsh outdoor environments. It is best suited for interior doors or sheltered entry doors in multi-user households.
| Attribute | | |
|---|---|---|
12 months | 18 monthsbest | |
41.5 mm | 50.8 mmbest | |
60 mm | 69.8 mmbest | |
| ↓ lower better | 0.3 secondsbest | — |
-10 °C | 65 °Cbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Connectivity & Smart Home(1) | ||
Smart Home Compatibility | Alexa, Google Assistant | Ring, SmartThings, Hubitat, Alexa, Google |
Access & Security(4) | ||
Encryption Standard | White-box cryptography | S2/128-bit AES |
Unlock Methods | Fingerprint, Keypad, Fob, Card, App, Mechanical Key | Hub, Keypad, Key |
Fingerprint Recognition Speed (seconds) | 0.3 seconds | null seconds |
Alarms | false | true |
Durability & Environment(2) | ||
IP Rating | Not specified | null |
Operating Temperature (°C) | -10 to 70 °C | -40 to 65 °C |
Power & Battery(3) | ||
Battery Life (months) | 12 months | 18 months |
Power Source | AA Batteries | 4 AA Batteries |
Low Battery Indicator | false | true |
Physical & Installation(4) | ||
Door Thickness Compatibility (mm) | 33-50 mm | 34.9-50.8 mm |
Backset (mm) | 60, 70 mm | 60.3-69.8 mm |
Lock Type | Lever Handle | Deadbolt |
Installation Type | DIY | Standard Deadbolt Replacement |
Support & Service(1) | ||
Warranty | 1 | null |
Products in the top-left offer the best value (high score, low price).
Professional reviewers position the Sifely keyless fingerprint lock as a budget-friendly, easy-install option with strong suitability for indoor, family, and light exterior use.
Users rate this lock highly for interior use and protected entry doors, praising its ease of installation and value for money.
“much better than expected for the price”
“love the fingerprint unlock indoors; it becomes a habitual, quick method”
Professional reviewers praise the Kwikset HomeConnect 620 for its Z-Wave 700 Long Range technology, which offers extended connectivity up to 1 mile, and its S2 encryption for security. Experts highlight the SmartStart feature for easy setup, the capacity for 250 users, and the lock's battery efficiency compared to Wi-Fi alternatives.
Everyday users commonly praise the lock for its reliable keypad and key access, long battery life, and the convenience of SmartKey re-keying. Many appreciate the strong integration with Ring and SmartThings, as well as features like audit trails and scheduled access codes. Recurring complaints involve bolt jamming on shallow strike plates, frequent battery changes due to door misalignment, and the need for manual re-handing after installation.
