... Anywhere and Anytime!Name: GSM GPRS Power Facility Alarm SystemModel: S250The GSM GPRS Power Facility Alarm (GSM GPRS Outdoor Alarm Controller) S250 ... communication protocol directly over wireless GPRS network.The GSM GPRS Power Facility Alarm (GSM GPRS Outdoor Alarm Controller) S250 supports ... Class4(2W)DCS1800,PCS1900 Class1(1W)GPRS Protocol: GSM,GPRS Phase2/2+GPRS Data: GPRS CLASS12, CS 1,CS 2,CS ...