... MODEM 2.GSM MODEM with TCP/IP 3.RS232 interface ES75iT m2m Industrial gprs modem gsm modem rs232 interface Description ... , as well as reception and transmission of faxesand SMS-messages. ES75iT has a watchdog timer with the reboot condition setting system ... , correspondingly. The modem is controlled by standard AT-commands. iRZ ES75iT is used in: • banking(ATM, POS) • SMS Gateway • Lift Monitoring ...