Use knx in node-red, just like the mqtt nodes
Node-RED node that controls knx
The input and output nodes is used in a similar way as the built in mqtt nodes. Set Group-address and DPT in config. Any GroupWrite or Response matching that will be sent out of the input node as a plain value in msg.payload
Package is currently in rapid development, I will bump to 1.0.0 when considered ready for production use.