... internet connection, data transmitting application and so on. KB3030 GPRS DTU (Data Terminal Unit) is special GPRS ... from COM port through GPRS mobile data network. KB3030 GPRS DTU is used in electric power automatic system ... the device with protocol (A).Under SMS Modem, KB3030 can receive and send the MAX data 1024 ... .Plug and play: when work with KB2000 or KB3030 of our product, no need to develop any ...