GTP-500M is an intelligent Controller with GPS. Within the high performance 32 bit CPU, GTP-500M is suited for the harsh industrial environment. It features 3G module, 1 RS-232, 1 RS-485, SD and one I/O expansion bus interface. It can be used in M2M application fields to transfer GPS and data of Modbus device via WCDMA/GPRS. GTP-500M has three functions for different requirement, including RTU function, RMV function and SMS function. Therefore, GTP-500M is an ideal solution for environmental monitoring, remote device management and vehicle monitoring system for M2M applications.