Sunlite sends an identifier enquiry to the interface PIC on startup.
If the hardware PIC (programmable intergrated circuit) does not respond with the correct answer, Sunlite starts up in DEMO mode.
I think it is safe to assume that Sunlite will
not work with any other type of USB to DMX interface.
The same is true if you try to use other software with the Sunlite Interfaxce.
For a description of the DHC_OPEN command for the interface you mention check out
http://www.pcdmx.com/ger/hardware/usbdmx1/dllinfo.htm