Sorry, I do not have any “smart” home devices yet and therefore cannot comment on SmartThings integration.
I did a lot more research and asked the various companies tons of questions, and end up ordering two Tailwind with vehicle sensor:
waiting for it to arrive, meanwhile, I installed a wired POE outdoor wifi access point to get better than 65dbm at both gates:
and purchased two outdoor magnetic reed switches that can operate with a wide gap since Tailwind (and other garage door gizmos) comes with a much smaller magnet requiring a very narrow gap and which is not rated for outside:
My original post was just at the start of my research, I was trying to help the original poster who asked about all-o-matic with what I’ve found at that point since I have the same gate operators.
I found is that any gizmo that can momentarily “short” two contacts will operate any gate operator, since all gate operators should have “open gate” terminals on their control board for a “push to exit button”, a fire department key, card reader, etc
and unlike a garage door, with a gate operator there is no need to worry about closing, since gates will automagically close.
but, the smart device should have some sort of a wired sensor, such as a magnetic reed switch, since a tilt sensor will not work with a gate.
if you want to go cheap Chinese, eBay has several at around $10
and if you are into DIY and have the time to tinker:
FYI: my other final candidates were Nexx and Garadget
Tailwind support was very responsive to all my questions, and I liked their “open on approach technology” even though (actually because) it requires an extra gizmo in the car.
Garadget support was amazingly responsive, but the laser might not work in bright light and dusty/dirty outside conditions which might obscure the reflective tape, and for some of the stuff I wanted it to do, it would have required a “home assistant” setup, which was too much for me to handle at this time.
I was not too impressed with Nexx capabilities esp “open on approach” and their support took a while to respond.
I ruled out iSmartgate as too expensive, not recall why I ruled out Remootio
Meross was ruled out due to a less reliable “open on approach” and for being expensive compared to other cheap Chinese devices.
hope this helps others looking to make their stupid gate operator smarter