Geryon security revolving doors protect secure areas of a building against unauthorised access and offer a variety of options for different levels of security. They are equipped with sensors to monitor and analyse the interior of the unit. They can be activated by card readers, buttons, operating panels or by biometric identification systems. The well-rounded selection of optional extras includes reinforced units to protect against burglary and bullet impact and versions with special sliding wings which provide EI-30 fire containment.