When passengers arrive at the station, conform to the card with an arrow to the front side of the card, the outgoing automatic door will be kept at the feeder door.
When passengers arrive at the station. Insert the card with the arrow on the front door, automatic outbound side of the cards are kept at the door automatically.
When the passengers to the station. To insert the card into the slot with arrow side front door automatically the outbound cards are stored at automatic.