Capability of the Ring Alarm Retrofit Kit

I need help to decide if the ring retrofit alarm kit is capable with my current alarm system. My current system has **15 window sensors on wireless** and **5 doors that are hard wired**. I'm sure that the two keypads I have should be replaced. Is the retrofit capatible with hardwired sensors or will I have to switch out the doors to wireless? And, is the ring retrofit alarm capable with my wireless sensors or do I need to replace those? What exactly are the limitations of the "retrofit system?" Where can I find tech support for this question?