It is quite possible that this board works perfectly. Unfortunately it is delivered just as it appears in the picture; i.e. no box, no supporting documentation or even a pointer as to where information about it can be found.
The Energenie website has a document with pointers to some C code that when compiled and run tries to repeatedly switch 4 sockets ON and OFF but only actually does this when it attempts to switch all 4 at once. The program cannot be used for anything useful like switching a selected socket. The C programs have no comments and there is no interface definition that I have found. Claims that the board supports SPI and I2C are not backed up by I2C example programs so I suspect only SPI is supported. Some later Python programs appears not to work at all.
What surprises me is that some one made this board presumably with a software interface definition which I am sure could be provided with the product. Personally, I have better things to do than derive the parameters from the program code that does not work properly anyway.
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