Hello Shirley,
The FT-60 and the flow scan are compatible with Dynon Skyview.
I believe they have the two models to let people chose the one they think the most reliable and/or the most accurate.
To have any other informations concerning the Skyview system, you can also download the Skyview installation guide on the Dynon website. It is very complete and will help you a lot in understanding how it is wired.
Hope this will help you,
Have a good day