KB3020 GPRS DTU (Data Terminal Unit) is wireless data transmitting terminal of GPRS and embedded with High reliable ARM7 CPU. KB3020 Working Frequency adopt 850MHz/900MHz/1800MHz/1900MHz which is suit for every country all over the world Support various data commission protocol (Normal, Single, and Transparent) and various networking ways. Due to this product is designed for industry integrated, we adopt special designs in the temperature scope, shaking, EMC and interface multiform and so on, to keep it good stability in the severe atmosphere, ensure high quality for your device. KB3020 GPRS DTU is used in electric power automatic system, industry monitoring, traffic management, atmosphere, pro-environment, pipe network monitoring, finance, securities departments and so on. Consider the networking request from different application scope, achieve Virtual data private network in network structure. It is applicable to small and medium data transmitting of the Center to multi-points, multi-points scatter.