Advantor AAM4-A Arex Door Controller
An Advantage Access 4 Communicator (AAM4C-A) acts as a panel, hosting up to seven AAM4-A modules. The AAM4C-A panel communicates with the Advantage Access computer over a standard dial telephone line or a dedicated line. The Advantage Access modules are standard AAM4-A modules. These modules can only communicate with the host panel, which in turn sends any alarms or activity to the Advantage Access computer.