成熟的GPRS技术依然可以用于物联网开发，比如智能农业、智能家居、智慧城市等。gtm900-c模是低成本的GPRS无线通信模块，本文档是GPRS的开发参考，包含关于ATM指令的详细说明，可直接通过串口实现GPRS信息收发，外界任意单片机或嵌入式系统，就可构建简单的物联网，并能通过手机等实现远程控制。-GPRS technology can still ripe for the development of things, such as smart agriculture, smart home, smart cities. gtm900-c-mode is a low-cost GPRS wireless communication module, this document is the development of GPRS reference, contains a detailed descr iption of the ATM commands can be directly implemented GPRS messaging via the serial port, outside any microcontroller or embedded system, you can build a simple of things, and through mobile phones and remote controls.