DS-K3B411BX

6 pairs of IR light detectors: Permissions validation and anti-tailgating LED light indicates passing direction The barrier will stop working for a period of time when detecting obstruction when open/close barrier Self-detection, Self-diagnostics, and automatic alarm 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 will automatically open when powering down View Less View more