Hikvision L/M Swing Barriers

4 pairs of IR light detectors: Permissions validation and anti-tailgating.LED light indicates passing direction.Valid passing duration settings: The 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 door wings will be free status.Built-in access control board and card readers.Support speaker and remote control keyfob optional, need to order separately.