OS: Linux,Memory: 256MB RAM/512MB FlashCommunication: TCP/IP, Wi-Fi (Optional), USB Host,Face Capacity: 500,User/Card Capacity: 1,000Transaction Capacity: 150,000,AC Adapter: 12V 1.5A,Operating Temperature: 0°C- 45°C,Operating Humidity: 20%-80%Standard Functions: ADMS, Work Code, DST, Self-service Query, Automatic Status Switch, T9 Input, Camera, 9-digit User ID, Multiple Verification Methods, Bell Scheduling