Level Bolt
Score: 85/100
eufy Smart Lock C220
Score: 88/100Rankings
The eufy Security Smart Lock C220 is a robust, hub-free Wi-Fi deadbolt featuring self-learning AI fingerprint recognition and BHMA Grade 3 durability. Its main drawback is the reliance on standard AA batteries without a rechargeable option. It is ideal for users in extreme weather environments or high-traffic households who prioritize reliability and ease of installation.
The Level Bolt is a retrofit smart lock that installs inside an existing deadbolt, preserving the original hardware and aesthetic appearance of the door. It offers multiple access methods and high security standards but suffers from short battery life and the need for additional hubs. It is best suited for design-conscious homeowners who want smart technology without visible hardware changes.
| Attribute | | |
|---|---|---|
4 months | 8 monthsbest | |
1.75 inchesbest | — | |
2.375 inchesbest | — | |
— | -22 °Fbest | |
0 entries | 50 entriesbest | |
2 yearsbest | 1.5 years |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Access & Security(1) | ||
Unlock Methods | App, Keypad, Voice, Physical Key | Fingerprint, App, Voice, Passcode, Mechanical Key, Button |
Durability & Environment(3) | ||
IP Rating | Not specified | IP53 |
Body Material | Stainless Steel | Zinc-alloy |
Operating Temperature (°F) | Not specified °F | -22 °F |
Access & Biometrics(1) | ||
Fingerprint Capacity (entries) | 0 entries | 50 entries |
Installation & Fitment(3) | ||
Door Thickness Compatibility (inches) | 1.75 inches | inches |
Backset (inches) | 2.375 inches | inches |
Installation Type | Retrofit | DIY |
Security & Compliance(2) | ||
Security Grade | Grade 1/A | Grade 3 |
Encryption Support | Matter | AES128 + ECC |
Support & Warranty(1) | ||
Warranty Period (years) | 2 years | 1.5 years |
Power & Battery(2) | ||
Battery Life (months) | 4 months | 8 months |
Battery Type | CR2 | AA |
Products in the top-left offer the best value (high score, low price).
Professional reviewers view the Level Bolt as a breakthrough in smart lock design philosophy, prioritizing home aesthetic over technological visibility. It is praised for its ingenious engineering, particularly the invisible retrofit design and robust security standards.
Everyday users consistently praise the invisible design and the preservation of their existing keys, noting that it maintains home aesthetics while adding smart functionality. Common complaints revolve around the short battery life requiring frequent replacements and the necessity of buying additional hubs for remote access.
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. Common praise includes the easy 15-minute installation and reliable app notifications.
“Disappears inside your door”
“Key still works perfectly”
“Solid build quality”
