My recent enhancement to implement ‘no watering if outside temp, measured at my home, is below 45 degrees F, at 10 AM,’ worked very well for the Dallas climate. I went about a month just dependent on weather caused watering, with no sprinkler system usage.
See http://welserver.com/perl/plot/WEL0343/Sprinkler2.png - I only used the system 5 hours in Dec., a monthly low for me in the Dallas climate.
All ‘hands free.’ Just sitting back and expecting my Iro2 to appropriately adjust to season and conditions without manual intervention. So far so good.
Remember I’m running ‘full auto’ (flex daily) 7x24x365, all in one ‘schedule.’ My objective is to run with the Iro2 with no need for occasional adjustments.