... stack850/900/1800/1900MHZComply with ETSI GSM phase 2+1.8V-3V SIM card slotDB9 RS232 interfaceSIM Application ... high sensitivityAlways on-lineOutput PowerClass 4(2W @ 850/900MHz)Class 1(1W @ 1800/1900MHz)Input voltage 7.5V-30V DCInput ... plates, CD Specification for DataGPRS Class 10 max.85.6kbps(downlinkPBCCH supportCoding schemes CS 1,2,3,4CSD up to ... and PDU mode Specification for FaxGroup 3, class 1