Sifely Smart Lock
Score: 78/100
eufy Smart Lock C220
Score: 88/100Rankings
The eufy Security Smart Lock C220 is a hub-free, Wi-Fi-enabled deadbolt featuring self-learning AI fingerprint recognition and BHMA Grade 3 durability. It offers six unlock methods and up to 8 months of battery life, making it suitable for high-traffic households. The main trade-off is the reliance on 8 AA batteries without a rechargeable option, which may require frequent maintenance.
The Sifely Keyless Entry Fingerprint Smart Door Lock is a lever-style smart lock designed to retrofit standard residential doors without drilling. It offers five to six unlock methods including fingerprint, keypad, key cards, fobs, and physical keys, with optional remote access via a separate Wi-Fi gateway. It is best suited for indoor or sheltered exterior doors and multi-user households.
| Attribute | | |
|---|---|---|
12 monthsbest | 8 months | |
1 years | 1.5 yearsbest | |
2 inchesbest | — | |
2.75 inchesbest | — | |
— | 150 feetbest | |
158 °Fbest | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Power & Battery(1) | ||
Battery Life (months) | 12 months | 8 months |
Support & Warranty(1) | ||
Warranty Length (years) | 1 years | 1.5 years |
Security & Access(4) | ||
Security Grade | Grade 3 | |
Unlock Methods | Fingerprint, Keypad, Key Fob, Card, App, Key | Fingerprint, App, Voice, Passcode, Physical Key, Button |
Keypad Type | Keypad | Backlit Numeric Anti-Peep |
Encryption Standard | White-box | AES128 + ECC |
Installation & Compatibility(3) | ||
Door Thickness Compatibility (inches) | 1.3125-2 inches | Standard inches |
Backset (inches) | 2.375-2.75 inches | Standard inches |
Installation Type | DIY | No Drilling Required |
Connectivity & Smart Features(3) | ||
Smart Home Integration | Alexa, Google Assistant | Matter, Alexa, Google, Apple Home, SmartThings |
Bluetooth Range (feet) | feet | 150 feet |
Wi-Fi Standard | Optional | Built-in Wi-Fi |
Build & Durability(4) | ||
Material | Zinc Alloy | Zinc-alloy/Stainless Steel |
IP Rating | IP53 | |
Operating Temperature (°F) | 14-158 °F | -22 to 158 °F |
Finish | Matte Black | Black |
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. They caution against relying on it in consistently harsh outdoor conditions or for users with very high-moisture or dirt-prone environments, noting that fingerprint reliability under wet conditions is less stable than higher-end competitors.
Everyday users tend to rate this lock highly for interior use and protected entry doors, praising its ease of installation and value for money. The main caveats reported by consumers are conditional grip on fingerprint recognition when hands are wet or dirty, and the need for a gateway to enable full remote features.
Professional reviewers praise the C220 as a 'triumph of form and function,' highlighting its reliability, hub-free Wi-Fi convenience, and premium build quality.
Everyday users appreciate the zero lockout anxiety provided by the physical key backup and the fast, accurate fingerprint recognition that improves over time.
“much better than expected for the price”
“love the fingerprint unlock indoors; it becomes a habitual, quick method”
“short video guide and clear markings made replacement of their old lock very simple”
