Interphone Bticino CLASS 100A16E 2-Wire handsfree for installation on the wall or table. It has 2 physical buttons for the command of the main functions of the response and the end of the call and of 3 touch-keys for the command of the main functions of the opening of the lock, light control stairs and the activation of the external/ciclamento plus 4 additional touch-sensitive buttons that are configurable, which they assume different features.