Barrier open/closed, free accessing, forbidden mode are selectable. Bidirectional (entering/exiting) lane LED indicates the entrance/exit and passing status. Fire alarm passing: when the fire alarm is triggered, the barrier will be dropped automatically for emergency evacuation. Valid passing duration settings: system will cancel the passing permission if a person does not pass through the lane within the valid passing duration. Easy integration of any third-party software management system via ISAPI procotol. With key buttons to configure turnstile's functions and parameters offline