I have used a rachio 3 controller for years and I am adding to my lawn. I require 4 more zones. is there a way to add another controller and not have it activate 2 zones at once?
I have 6 zones of shrub and flower with the control valves not near each other). could I run them on 2 zones ( with an external 24VAC relay (2) ) which would free up 4 zones to run the other new Lawn area?