@DLane, @Gene - thank you, seems to work beautifully!
Here is a picture of the final, working setup for Gen 3 and HRC-100
PS @franz, @laura.bauman - just a heads-up, I was given incorrect information by your support team when I called in about this a few days ago. The very professional and friendly gentleman advised me that this particular sensor was not compatible due to power supply differences. Not a complaint, just an opportunity to update the KB for future callers 
Thank you all, you’re awesome.
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Hey @ProjektR! Thank you so much for the heads up - is the email in your community account the same one used in the support ticket? Want to look into it to make sure it doesn’t happen again 
-Lo 
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Thanks @laura.bauman I’ll PM you.
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Hi everyone I am having a similar problem as above. I have an orbit wireless rain and freeze sensor model 57071. it is very similar to the Hydro Rain HRC-100. I have wired it exactly as pictured above. I have also attached my pictures.
The wireless controller powers on and when i activate the manual override the Rachio 3 sends a notification as if it is working shutting off the sprinklers. However the sprinklers do not shut off. Is this functioning correctly? do I even have the rain sensor wired correctly?. Any help would be greatly appreciated.
