You may want to remove the Wireless Flow Meter from this page and any other marketing or pseudo-marketing pages like it, based on @franz comment here that it has been discontinued.
Fwiw, I was looking at upgrading to a G3 w/WFM due to a problem I’m having, but would have passed because it lacked a supply line valve to shut off the water if I have a broken valve or sprinkler head. If y’all are considering some sort of Mark II device, you may want to include a shutoff (or better yet, auto-shutoff) valve in it. I would absolutely buy a WFM/Smart Shutoff valve if it was compatible with my G2. Right NOW! 
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