基于GPRS网络的远程监控系统，具有（至少）4路模拟量输入；（至少）有4路继电器输入/输出；扩展数据存储器；具有看门狗功能；-based on the GPRS network remote monitoring system, it has (at least) four analog input; (at least) four road relay input / output; expansion data memory; with watchdog function;