I just found out that the new flow sensor only works with the Rachio 3 and does not work with my existing 2nd generation. That means that I would have to buy a new Rachio 3 for it to work.
I also have some customers that I helped install 8 of the Rachio 2 about a year ago and they now find out the same thing that the new flow sensor will not work on their system and they would have to buy a Racho 3.
All of them including me are very disappointed to find out that Rachio has left us out of the picture and will not buy the Rachio 3 because we already spent enough on a controller that is only a year old.
I already confirmed that the new flow sensor will only operate with the new Rachio 3 but talking to a Rachio Rep.