This document describes the architecture and functionality of the Z-Wave DLL that supports Z-Wave enabled PC based applications. This document includes conceptual overviews， step-by-step procedures， and information about samples. More and up-to-date information on Z-Wave DLL API references and practical implementation can be found in the Z_Wave DLL Documentation.chm online help file， which is automatically generated when the Z-Wave DLL is installed （C：\DevKit_x_yy\PC\Bin\ZWaveDll\setup.exe）。 By default， it is located at C：\Program Files\Zensys\Z-Wave Dll\Z_Wave DLL Documentation.chm. 2.2 Audience and prerequisites The audience is Z-Wave partners and Zensys developers. It is assumed that partner developers already have and are familiar with the Z-Wave Developer’s Kit.