The Nice Smart B2 is a compact smart knob lock with semiconductor fingerprint sensor, PIN code keypad, and 13.56MHz IC card reader. Round knob design replaces standard door knobs without additional door modification. Aluminium alloy and ABS with tempered glass touch panel. Powered by 2x AA batteries supporting approximately 10,000 operations. Tuya IoT and TTLock connectivity over Bluetooth with optional Wi-Fi and NFC. Safety lock, tamper alert, and battery alert. Working temperature -20°C to 60°C. Stores up to 50 fingerprints, 50 PIN codes, and 50 IC cards. Available in black. Designed for interior applications — office rooms, storage, Airbnb bedrooms, and private rooms within shared spaces. OEM branding and ODM customization available.
Key Features
How It Works
| Specification | Details |
|---|---|
| Lock Type | Smart Knob Lock |
| Fingerprint Capacity | ≤50 |
| Password Capacity | ≤50 |
| Card Capacity | ≤50 |
| Material | Aluminium Alloy + ABS + Tempered Glass |
| Power Supply | 2 AA Batteries |
| Battery Duration | Approx. 10,000 Unlocks (~12 Months) |
| Door Opening Modes | Fingerprint, PIN, IC Card |
| Connectivity | Bluetooth, Tuya/TTLock App, Wi-Fi/NFC (Optional) |
| Unlock Speed | ~0.5 Second |
| Working Temperature | -20℃ ~ 60℃ |
| Door Type | Wood, Metal |
| Installation | Retrofit – Fits Standard Knob Hole |
| Security Features | Safety Lock, Tamper Alert, Battery Alert |
| Colors | Black |
What is the difference between the B1 and B2?
Both share the same smart knob format with fingerprint, PIN, and IC card at 50-user capacity. The B2 features an updated exterior design.
Can the B2 replace a standard door knob?
Yes. The B2 retrofits into standard door knob preparations without additional cutouts or modification.
Is the B2 suitable for hotel interior doors?
Yes. Works well for bathroom doors, connecting rooms, storage areas, and staff rooms. Can be managed alongside main entry locks via TTLock or Tuya.
What is the user capacity?
50 fingerprints, 50 PIN codes, and 50 IC cards – 150 total credentials.
Can the B2 be ordered in bulk with main entry locks?
Yes. The B2 is commonly ordered alongside mortise or rim locks for complete property access control. Mixed-model orders supported.
