Originally Posted by koster_irrigation
I bet that controller is not the original controller for that site.
You are correct. When I first started on it, there were two. There was one of the original Rainbird ESP exterior controller, and I can't remember the other. I believe it was tan in color, probably a Richdel/Irritrol/Hardie. At one point, we eliminated one zone that was never really used, so I eliminated the tan controller, as it was doing one station only. Then a season or so later, I go to blow out the system, and one of the doctors changes out the ESP to the orbit POS. I think there was a controller there before the ESP as well.