I have the Pro-C unit, and I disconnected the green and black wires that come from the roof mounted rain sensor and the solar sync sensor. That way, I can program the watering schedule without worrying about the watering times being changed by the solar sync sensor, or the rain sensor failing to accurately predict the rain. I see no need for a WIFI controlled system. I think there is way too much discussion and concern about controlling the watering schedule. Set it and forget it. If you lawn turns brown, make some adjustments in the watering times. Irrigation water is cheap.
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