I and I suspect many others used the Starling Home hub along with their Starling Protect 24/7 Monitoring Service to get reasonably price ($7/mo) monitoring with Nest Protect Smoke/CO Detectors.
As you may know, Starling shut down this service last month and I (and probably many others) are scrambling to find a reasonably price central monitoring service to meet insurance company requirements.
If Hubitat added Smoke/CO Detector support in Hubitat Homekit Controller then those like me could save a large setup cost and additionally save $100's a year using the $10/mo Konnected Hubitat Moonlight integration. Please consider this support.
I understand a C8-pro is needed (which luckily I have).