... modem, RS232 modem, GSM IP modem, GPRS data modem, data terminal,GPRS DTU, TCP/IP modem, Support transparent data transfe, gprs ... I/OF2114 GPRS IP MODEM is a kind of cellular terminal device that provides data transfer function by public GPRS network ... 1 RS485(orRS422) port, 15KV ESD protectionData bits: 5, 6 ,7, 8Stop bits: 1, 1.5, 2Parity: none, even, odd, space ...