... modem, huawei, gsm modem rs232, huawei 3g usb modem, huawei modem, huawei 3g, hsdpa wireless modem, wcdma modem, hsdpa, modems, gsm modem,internet modem, cable modemsEEF1103 GPRS MODEM SPECIFICATIONEF1103 GPRS modem ... +Support DTMFSupport SMS and CSD functionStandard AT command interface InterfaceRS232 serial port, rates: 110~230400bits/sIndicator lights: “Power”, “ACT”, “Online”Antenna ...