KNX protocol testing with node-red

Hello again,
I'm working on KNX protocol right now, so I have installed KNX (node-red-contrib-knx) plugins for processing the functions of it, but i don't have a physical device so any suggestion for testing the KNX protocol with node-red

You mean you do not have the physical KNX devices? You can just use the KNX virtual software from my.knx.org