Regarding your question on "how many remotes come wiht the 2011 3595RE":
Heartland started installing the wireless remote control system mid model year 2011. Assuming your coach had the option for wireless remote control system, one single key fob remote would come with the coach.
A total of two key fobs can be trained to a coach brain to control slides, jacks, awning, lights.
I hope this helps answer your question.