A microprocessor (220), disposed in an irrigation controller (200), is programmed to automatically derive an irrigation schedule based at least in part on a rolling-average of required watering amounts. The rolling-average is preferably an average of four consecutive required watering amounts but may...http://www.google.es/patents/US20040089164?utm_source=gb-gplus-sharePatente US20040089164 - Device that modifies irrigation schedules of existing irrgation controllers
Device that modifies irrigation schedules of existing irrgation controllers
