fingerprint access control with built-in back-up battery, access control interface for electric lock, door sensor, exit ... screen with GUI interface for ease of useBuilt-in backup battery supports approx 4 hours continuous operationTCP/IP, RS232/485, ... & outputAccess control interface: electric lock, door sensor, exit button, alarm, door bellStandard functions: workcode, SMS, DLST, Self-Service Query, ...