[James Johnson]

Have you seen this system from Teradek?

https://teradek.com/blogs/articles/achieve-wireless-camera-control-with-your-bolt-4khttps://teradek.com/blogs/articles/achieve-wireless-camera-control-with-your-bolt-4k

I have used Teradek in the past to monitor and pull focus from afar and it works great, but never remote camera control. And I wouldn’t trust a phone app in your scenario.