My Home Depot must be one of the unlucky ones as the timer I just bought yesterday is ABC.
Knowing there is a firmware update coming (for ABCD units only from what I am reading) that means that Orbit is falsely claiming compatibility with their in store signage.
So I am still stuck with a unit that was purchased based on a lie from Orbit.
I am expecting Orbit to fix this for me. I have already notified Home Depot that they are perpetuating a lie.