KNX Bus compatible Smart Door Lock

I am new to the KNX bus, i am doing a project for wired home automation using the KNXbus, i am finding it difficult to get a smart door lock that can be integrated to the KNX bus. One of my suppliers told me Yale has a smart door lock that is compatible using RS232/RS483 module, upon contacting Yale, they said they do not have anything that supports that communication. 

Any assistance or recommendations will be greatly appreciated. It could be Yale works but i am not sure how or which smart lock exactly.