4.3 inch glass touch screen with a resolution of 480 × 272. 2-MP wide-angle dual-lens camera with IR illumination and DWDR. Multiple unlock methods including fingerprint, face, IC card and pass word. You can also combine them to create your own personal unlock methods. Supports mask detection. Supports visitor QR code with DSS Pro Platform. Recognizes faces 0.3 m to 1.5 m away (0.98 ft-4.92 ft). Supports 3,000 users, 3,000 faces, 3,000 passwords, 5,000 cards, 5,000 fingerprints, 50 administrators, and 300,000 records. Liveness detection has a face recognition accuracy rate of 99.9% and the 1:N comparison time is 0.2 s per person. Supports making video calls and using the app to receive alarm notifi cations, remotely unlock doors and to perform other tasks. Supports customization of voice prompts.