... gprs data logger Name: GPRS Modbus RTUModel: S280(4AIN, 2DIN,2DOUT)The GPRS Modbus RTU S280 embedded with High ... DTU (Data Transfer Unit) and a GPRS Data Logger. It is the best solution for small application ... -time online data transfer, no distance limitation;2.Embedded 32 bit ARM9-MCU(120Mhz,80K flash) with ... TCP,UDP,IP,ICMP,DNS network protocol;4.Embedded complete PPP,TCP,IP protocol stack;5.Supports ...