... on Wavecom GSM/GPRS module Q24plus 2.Quad-band 3.With TCP/IP stack 4.PPP,TCP, UDP RS485 GSM/GPRS ... PlusWith TCP/IP stackInternet Services: PPP,TCP, UDPNo FTPOpen ATFlash memory 32MB, PSRAM 16MB850/900/1800/1900MHZ3V SIM card slotRS485 interface ... (DTMF)Send and receive data, SMSGPRS Class 10Antenna with high sensitivityAlways on-lineComply with ETSI GSM Phase2+ standardOutput PowerClass 4(2W @ 850 ...