How does the algorithm work?   Specifically how far into the future do it look at the weather forecast?   Is this limited to just the next day or can this be adjusted to look beyond tomorrow.    Using the smart system, my sprinklers came on this morning, even though the forecast calls for a 70% chance of 1 inch of rain in 2 days.    If I were controlling the system, I would not have watered, given the price we pay for water.