• 12 pairs of IR light detectors: Permissions validation and anti-tailgating • LED light indicates passing direction • Audible and visual nipping alarm: The barrier will stop working for a period of time when detecting obstruction when open/close barrier • Self-detection, Self-diagnostics, and automatic alarm • Valid passing duration settings: System will cancel the passing permission if a person does not pass through the lane within the valid passing duration • Door remaining open when fire alarm triggered: The barrier will open automatically when alarm is triggered. • Barrier is in free status when powering down