... MODEM, industry MODEM, GSM modem, RS232 WIRELESS GSM/GPRS MODEM, SMS GSM MODEM, huawei gsm modem,, sms module, gsm modem at command, ... fields.Wireless SpecificationEGSM900/GSM1800GPRS multi-slot class 10Compliant to GSM phase 2/2+Support DTMFSupport SMS and CSD ... rates: 110~230400bits/sIndicator lights: “Power”, “ACT”, “Online”Antenna ports: standard SMA female ports, 50 ohmSIM/UIM interface: standard ...