Transmission Rate: 171.2kb/S Cellular Module: Industrial Cellular Module Standard and Band: GSM850/900/1800/1900MHz(Optional GPRS modem 3G modem M2M GPRS Modem With RS232 RS485 for Meter Reading Temperature and Humidity Monitoring (F2103I)Designed with industrial grade, with TCP/IP stack, supports transparent data transmission, AT Command, RS232/485, remote configuration and control, with ...