RS 232 RS 485 Modbus Rtu Communication

GSM GPRS Modbus RTU With RS485/RS232 for Vehicle Safety Monitoring System Model Specification Model I/O Interface Communication port 3G HSDPA SMS TCP/IP over cellular M3G2 2AI+2DI+2DO 2 RS232+1 RS485 N Y Y M3G6 6AI+6DI+6DO 2 RS232+1 RS485 N Y Y M3D2 2AI+2DI+2DO 2 RS232+2 RS485+EHTERNET Y Y Y M3D4 4AI+4DI+4DO 2 RS232+2 RS485+EHTERNET Y Y Y M3D8 8AI+8DI+8DO 2 RS232+2 RS485+EHTERNET N Y Y Specification Gsm gprs wcdma module Industrial GPRS wireless module, frequency range850/900