This type of door has an automatic one-way control system. It consists of 2 leaves with 2 automatic barriers. If an attempt is made to go backwards, the barriers automatically block the passage. The door leaves are immediately closed and locked, and this action is communicated to the building control system. Easily integrated into existing security systems, this model has been installed in many public places in Europe where high security is required. Ideal as a second entrance such as supermarkets, shopping malls, airports and stations.