Door access control is the core function of AST system. It is one of the earliest access control implementation
that supports true TCP/IP and Wifi as connection interface. With the support of contemporary network
infrastructure, doors in different physical location can be monitored and managed in one single system. It
contains almost all the features required for door access. More than that, the system is capable to extend its
functionality for the access of turnstiles, lift, car park, and even mail box.