TTL GSM/GPRS modem Based on Cinterion module MC52I 900/1800MHZ with TCP/IP stack PPP,TCP, UDP, HTTP, FTP, SMTP, POP3 TTL GSM/GPRS modem General FeaturesIndustrial designAluminum casingWireless access to internetBased on Cinterion module MC52I 900/1800MHZwith TCP/IP stackInternet Services: PPP,TCP, UDP, HTTP, FTP, SMTP, POP3Comply with ETSI GSM phase 2+3V SIM card slotTTL interfaceSIM Application ...