Tuya 3D Face Palm Vein Smart Door Lock SK-D21 – AI Voice Video Intercom Villa Lock

Tuya 3D Face and Palm Vein Smart Door Lock

The SK-D21 is a Tuya WiFi smart door lock with 3D face recognition, palm vein scanning and AI voice interaction. It also features a built-in camera for video intercom — perfect for high-end villas and family homes that demand both security and convenience.

Key Features

• True 3D face recognition – one scan, touchless, under 0.5 seconds.
• AI palm vein recognition – internal biometric, impossible to spoof, ≤1 second.
• Fingerprint sensor – fast biometric on the handle.
• Built-in camera + video intercom – see and talk to visitors from the Tuya App.
• AI voice assistant – “Hello, little love” style voice interaction for daily commands.
• Tuya WiFi App – remote unlock, e-key sharing, cloud storage.
• C-grade lock cylinder – high-level security.

Specifications

Model	SK-D21
Unlock methods	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

Built for Villas and High-End Homes

The SK-D21 combines three biometric layers — 3D face, palm vein and fingerprint — so you can choose the fastest or most secure option for any situation. The AI voice assistant lets you register fingerprints, lock the door and adjust the volume by voice. The video intercom camera lets you see and talk to visitors remotely from anywhere in the world.

As an OEM/ODM manufacturer, we supply the SK-D21 with custom logo, packaging and color options for distributors and project buyers worldwide.

Contact us for bulk pricing, samples or OEM/ODM customization.