Sifely Smart Lock
Score: 75/100
Ultraloq U-Bolt
Score: 85/100Rankings
The Ultraloq U-Bolt Pro is a versatile, Grade 1 certified smart deadbolt featuring built-in WiFi and an impressive 8-in-1 entry method suite. Its main trade-offs are the high battery consumption from WiFi connectivity and the limitation to 2.4GHz networks. It is ideal for tech-savvy homeowners and Airbnb hosts who need robust remote access and door-ajar alerts.
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 monthsbest | 4.5 months | |
41.5 mmbest | 40 mm | |
60 mmbest | 60 mmbest | |
| ↓ lower better | 0.3 secondsbest | — |
-10 °Cbest | -20 °C |
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 | Alexa, Google Assistant, SmartThings, IFTTT |
Access & Security(4) | ||
Encryption Standard | White-box cryptography | 128-bit AES |
Unlock Methods | Fingerprint, Keypad, Fob, Card, App, Mechanical Key | App, Fingerprint, Keypad, NFC, Physical Key, Voice, Web Portal |
Fingerprint Recognition Speed (seconds) | 0.3 seconds | seconds |
Alarms | false | |
Durability & Environment(2) | ||
IP Rating | Not specified | IP65 |
Operating Temperature (°C) | -10 to 70 °C | -20 to 65 °C |
Power & Battery(3) | ||
Battery Life (months) | 12 months | 3-6 months |
Power Source | AA Batteries | 8x AA Alkaline |
Low Battery Indicator | false | |
Physical & Installation(4) | ||
Door Thickness Compatibility (mm) | 33-50 mm | 35-45 mm |
Backset (mm) | 60, 70 mm | 60 or 70 mm |
Lock Type | Lever Handle | Deadbolt |
Installation Type | DIY | DIY No-Drill |
Support & Service(1) | ||
Warranty | 1 | 1.5 |
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.
TechHive and the Ultraloq community praise the U-Bolt Pro for its healthy facelift and improved auto-unlock geofencing over previous models. Reviewers highlight the configurable auto-lock feature using the door sensor and the plentiful features that balance security with convenience. The product is considered a flagship for user-friendliness, particularly due to its built-in WiFi, Bluetooth, and door sensor capabilities that fit standard doors with a quick, no-drill install.
Everyday users generally praise the simple app navigation, reliable remote control, and door alerts. There is strong appreciation for the IP65 durability and BHMA certification, which contribute to a sense of security. Users value the versatility of having multiple entry methods like fingerprint, app, and keypad. While complaints are scarce, some users note the limitation of WiFi-only connectivity and potential battery life concerns.
“much better than expected for the price”
“love the fingerprint unlock indoors; it becomes a habitual, quick method”
“Engineering excellence”
