TTL GSM/GPRS modem Based on Cinterion module MC52I 900/1800MHZ with TCP/IP stack PPP,TCP, UDP, HTTP, ... modemGeneral FeaturesIndustrial designAluminum casingWireless access to internetBased on Cinterion module MC52I 900/1800MHZwith TCP/IP stackInternet Services: PPP,TCP, UDP, HTTP ...