RS485 GSM/GPRS modem 1.Based on Wavecom GSM/GPRS module Q24plus 2.Quad-band 3.With TCP/IP stack 4.PPP,TCP, UDP RS485 GSM/GPRS Modem Product descriptionIndustrial designAluminum casingWireless access to internetBased on Wavecom GSM/GPRS module Q24 PlusWith TCP/IP stackInternet Services: PPP,TCP, UDPNo FTPOpen ATFlash memory 32MB, PSRAM 16MB850/900/1800/1900MHZ3V SIM card slotRS485 interface:PIN 1 ...