3D Face and Palm Vein Smart Lock: The Next-Generation Villa Door Lock
For high-end villas and family homes, a smart lock should do more than unlock — it should recognize you before you reach the door, talk back when you ask, and show you who is outside. The SK-D21 Tuya smart door lock combines all three: 3D face recognition, palm vein scanning and AI voice interaction.
True 3D Face Recognition
The built-in 3D camera scans your face in under 0.5 seconds. It covers heights from 1.2m to 2.0m, so both adults and children can use it. The recognition distance is 0.4–0.8m — walk up to the door and it opens before you touch anything. No keys, no phone, no touch.
AI Palm Vein Recognition
Palm vein recognition reads the blood vessels under your skin — not the surface. It cannot be photographed, copied or faked. The false recognition rate is below 0.001%, and it works even if your palm is dusty or wet. Wave your hand 20cm from the sensor and the lock opens in under 1 second.
AI Voice Assistant
The SK-D21 has a built-in AI voice assistant. Say “Hello, little love” and it responds. You can ask it to register fingerprints, lock the door, adjust the volume or check network status — all hands-free. It feels like a personal security guard at your front door.
Video Intercom Camera
The built-in camera lets you see and talk to visitors from the Tuya App, even when you are not home. Combined with face and palm recognition, the SK-D21 gives you three layers of biometric security plus visual verification.
Specifications
- Model: SK-D21
- Unlock: 3D Face / Palm vein / Fingerprint / IC card / Password / App
- App: Tuya Smart
- Network: WiFi
- Biometric: 3D face + Palm vein + Fingerprint
- Camera: Built-in video intercom
- Voice: AI voice assistant
- Lock cylinder: C-grade
- Colors: Black / Rose gold
Getting Started
As an OEM/ODM manufacturer, we supply the SK-D21 with custom logo, packaging and color options for distributors and project buyers. Contact us for samples, bulk pricing or OEM/ODM customization.