Intelligent Communication Module type A1SD51S User''s Manual (智能通信模块A1SD51S用户手册)
Intelligent Communication Module A1SD51S User''s Manual (Hardware)(智能通信模块A1SD51S硬件用户手册)
A1SD51S Programming Manual (Command)(A1SD51S通信编程手册)
A1SD51S Programming Manual (Debug and Compile)(A1SD51S调试和编译编程手册)
A1SD51S Programming Manual (Command)(A1SD51S指令编程手册)
A1SD51S Programming Manual (Debug and Compile)(A1SD51S调试和编译编程手册)