Level Bolt
Score: 78/100
eufy Video Smart Lock S330 3-in-1
Score: 85/100Rankings
The eufy Security Video Smart Lock S330 is a comprehensive 3-in-1 device combining fingerprint deadbolt, 2K HD camera, and video doorbell with chime. It offers keyless entry via app, voice, keypad, or keys, powered by a single 10,000 mAh battery that lasts up to 365 days without requiring subscription fees. It is ideal for families or frequent travelers needing all-in-one front-door monitoring without subscriptions.
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.
| Attribute | | |
|---|---|---|
— | 365 hoursbest | |
— | 50 credentialsbest | |
— | 6.1 metersbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Power & Battery(2) | ||
Battery Type | CR2 Lithium | Rechargeable Lithium |
Backup Power | true | |
Installation & Fit(1) | ||
Installation Type | Retrofit | Deadbolt |
Connectivity & Smart Home(3) | ||
Connectivity Standards | Bluetooth | Wi-Fi 2.4GHz |
Voice Assistant Compatibility | Alexa, Google Assistant, Siri | Alexa, Google Assistant |
Bluetooth Range (meters) | N/A meters | 6.1 meters |
Durability & Environment(2) | ||
IP Rating | N/A | IP65 |
Operating Temperature | N/A | -30°C to 70°C |
Access & Security(4) | ||
Security Grade | Grade 1/A | BHMA |
Unlock Methods | App, Keypad, Voice, Physical Keys | Fingerprint, App, Voice, Keypad, Keys |
Fingerprint Capacity (credentials) | N/A credentials | 50 credentials |
Activity Log | true | |
Build & Design(1) | ||
Material | Metal | |
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 S330's integration and battery life, calling it a transformative 3-in-1 solution for front-door security. They highlight the crystal clear 2K views and reliable motion detection up to 19 feet. Editors also note its BHMA certification and IP65 rating as key indicators of durability in harsh conditions ranging from -22°F to 158°F.
Everyday users commonly praise the effortless 0.3-second fingerprint unlocks, noting they are faster than keys, and the reliable 365-day battery life. Clear 2K video and accurate AI alerts that reduce false notifications by 95% are also highly valued. Recurring complaints focus on setup complexity with the chime and microSD, occasional Wi-Fi connectivity issues on 2.4 GHz, and the heavy 5.5 lb weight feeling difficult during install.
