Also take a look at this topic. While its not available yet, they did tell me to check in March as to ST integration. I’m waiting to hear from them before I finalize motion detection and camera setup.
https://community.smartthings.com/t/mr-beams-wireless-lighting-and-smartthings/20370
For now I’ve installed Aeon Multi-Sensors and haven’t had the issues reported above, it works very reliable on a lower setting (4 I think). It is a bit slow, but I assume any battery operated device would be. It struggles with accurate temperature if it gets below 25F or so, but thats of no concern to me. I also have one blink camera, its about the same speed when it comes to detecting motion. Either trip I turn on all outside lights, good enough until a better solution arrives, and I’m hoping the Mr. Beams will be part of it.