I just upgraded one of my old GC-100-6 to the iTach IP2IR. I am trying to get the sensors working with it now. On the GC-100 I would set the connector to Sensor with Auto-Notify. And that worked well for me in my Cinemar Mainlobby. However now I am presented with 2 options Sensor In and Sensor Notify, and the Sensor Notify gives me Notify Port and Notify Timer. How do I set it up to emulate what Auto-Notify did on the GC-100.