Hi,
You have the older Rachio - not the new Rachio 3. The new one has the addition of 900Mhz links which operate in the vodaphone cell band and are therefore illegal in Australia. The Rachio 2 is legal as it does not have this transmitter and as you point out operates on the 2.4 wifi band.
So, under no circumstances buy the Rachio 3 for Australia until Rachio verify it works between 915 and 928 otherwise you WILL get a hefty fine.
I know the 120v is annoying but even if they put in 100-240 you would still need a plug adapter, so for me it would be better if they sold it without the transformer and I’d buy local.
Not being able to buy a Rachio 3 for Australia is annoying as it means a loss of access to new features it will support.
Shortsighted, but the US market is so big they don’t care.
