Common Features:

1. Biometric Verification:
   • Fingerprint recognition
   • Face recognition
   • Palm vein recognition
2. RFID Card Reader:
   • Proximity card reader
   • Supports various card types and frequencies
3. Display:
   • LCD or TFT display for user interface
4. Storage Capacity:
   • Large transaction storage capacity
   • Stores thousands of fingerprints/cards and transaction records
5. Communication:
   • TCP/IP for network connectivity
   • USB port for data transfer and manual data download
6. Verification Speed:
   • Fast fingerprint or face verification speed (usually <1 second)
7. Identification Speed:
   • Fast user identification speed (usually <1.5 seconds)
8. Power Supply:
   • DC power supply
   • Backup battery support
9. Software Compatibility:
   • Compatible with time attendance software for data management and reporting
10. Alarm Function:
    • Built-in buzzer for notifications and alarms
11. Multi-language Support:
    • Supports multiple languages for user interface
12. Operating Temperature and Humidity:
    • Wide range of operating temperature and humidity tolerance
13. Access Control Interface:
    • Supports electric lock and door sensor for access control
14. User Capacity:
    • Supports a large number of users (employees)
15. Data Backup:
    • Supports data backup and restore functionality
16. Real-time Monitoring:
    • Real-time monitoring of attendance data and device status