concentrator for communication for electric energy meter, water meter and gas meter by network GSM/GPRS 1.Brief IntroductionKB3050 GPRS DTU (Data Terminal Unit) is wireless data transmitting terminal of GPRS/SMS and embedded with High reliable ARM7 CPU.Based on the public net, KB3050 GPRS DTU transmit widely,stably and reliably, KB3050 GPRS DTU is widely used in unattended operation device, ...