After contemplating both the Konnected.io and Envisalink solutions, I decided to go with Envisalink. It’s well worth the effort, and now my DSC system is fully integrated into ST and I can control arming/disarming as well as using all the sensors in my ST routines. I pretty much followed the sequence outlined on this page: GitHub - LXXero/DSCAlarm. Set up the device handlers, then the Smartapp, then the Alarmserver on the Raspberry Pi. The Alarmserver set up took the longest as I had to figure out how to run the Alarmserver files and edit the config file (I’m a Raspi3 n00b)… But I got it all up and running in one night after installing the Envisalink to my alarm panel.