The ACC-COM-GSM is used when the Master Controller of a Site is connected via GSM cellular connection and requires a dial-up modem in the central computer, and a working cellular telephone data number with CSD (circuit switched data) enabled at the Site for the Master Controller connection. ACC-COM-GSM has cellular communications built-in, but requires a SIM card from the cellular provider, and may also require the additional ACC-HWIM and/or RAD3 modules for outbound radio and/or hardwire connections with other controllers.
Documents: