Level Bolt
Score: 78/100
eufy Video Smart Lock E330 3-in-1
Score: 78/100Rankings
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 including mobile app, keypad, voice control, and physical keys, while maintaining ANSI Grade 1/A security standards. It is best suited for design-conscious homeowners who want smart technology without visible hardware changes.
The eufy Security E330 is a robust 3-in-1 smart lock offering 2K video, local storage, and fast biometric access without subscription fees. Its main drawbacks are inconsistent battery life and limited smart home ecosystem compatibility. It is best suited for Alexa/Google users seeking an all-in-one solution without monthly costs.
| Attribute | | |
|---|---|---|
— | 50 credentialsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Power & Battery(1) | ||
Battery Type | CR2 Lithium | Rechargeable Li-ion |
Installation & Fit(2) | ||
Door Thickness Compatibility | 44mm+ | 35-55 mm |
Installation Type | Retrofit | No-Drill |
Connectivity & Smart Home(2) | ||
Connectivity Standards | Bluetooth | Wi-Fi |
Voice Assistant Compatibility | Alexa, Google Assistant, Siri | Alexa, Google Assistant |
Durability & Environment(2) | ||
IP Rating | N/A | IP65 |
Operating Temperature | N/A | -30°C to 70°C |
Access & Security(3) | ||
Security Grade | Grade 1/A | BHMA Certified |
Unlock Methods | App, Keypad, Voice, Physical Keys | Fingerprint, App, Keypad, Voice, Physical Key |
Fingerprint Capacity (credentials) | N/A credentials | 50 credentials |
Build & Design(1) | ||
Material | Metal | Metal/Plastic |
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.
Everyday users consistently praise the invisible design and the preservation of their existing keys, noting that it maintains home aesthetics while adding smart functionality.
“Disappears inside your door”
“Key still works perfectly”
“Solid build quality”
Professional reviewers praise the E330 for its innovative all-in-one design, sharp 2K camera, and reliable motion detection. The subscription-free local storage and quick fingerprint unlock are highlighted as key strengths. However, critics note rapid battery drain, poor dark-time usability for the keypad, and limited ecosystem compatibility due to the lack of HomeKit support.
Everyday users appreciate the seamless fingerprint unlocks, clear video quality for package monitoring, and the benefit of no subscription fees. Recurring complaints focus on battery life falling short of expectations, confusing keypad lighting at night, and occasional Wi-Fi connectivity issues.
