The program SerialRelayTest.exe will test the functions of the Serial Relay board.

***Note, this is a Windows PC application requiring .Net 3.5 framework or greater***

1) Connect Serial Relay board to PC
2) Open SerialRelayTest.exe
3) Select proper COM port from list
4) Select desired function and click Send button


 Source Download : http://northosoft.com/Projects/

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The .Net library SerialRelayLib.dll may be used as reference for your own custom program.
Source code example is included, written in C# .net, soulution is in VS2010.