The Pro C came with a wiring harness for the receiver of the SRR to plug into. I don't believe the remote will come with a new harness. So make sure you have one of those. Basically the SRR works about as good as a garage door opener remote as far as distance goes. You'll find yourself aiming it through the windows of your house to the controller. That's all most home owners need though. I always found that the higher up I could get the receiver the better the reception so I'd just hang it from the highest point. I finally broke down and bought the ICR. If you want to get fancy with it here's a link.
http://www.hunterindustries.com/resources/technical%5Fbulletins/srr%5Finstallation.html 
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Rainbird ESP-LX Com Port
(Aug 15th 2005, 7:17am)