Monitoring smoke detectors 7x24

I've poked around and seem to be in a minority as my primary interest is using Ring to provide around the clock monitoring of my 7 smoke detectors, one of which is a combined smoke/CO detector. With my limited understanding, I believe I can buy 7 Ring listeners that will feed their signal into a Ring device that will call my phone and if I don't respond it will escalate to the 911 system. Has anybody got something like this working without buying Ring-compatible smoke detectors? If that's what it takes I'll do it, but it seems I should be able to buy 7 Ring listeners and put one by each of my existing smoke detectors and reach my objective. Sorry if I'm the new guy who didn't dig deeply enough into the existing threads but it seems everyone is scared of somebody breaking a window. I'm far more concerned with minimizing the impact of 'another' fire. We were at home and awakened by our smoke alarms. We called 911 and managed to keep a minor garage fire down to the level where we were 'only' out of the house for 16 weeks and lost many of our possessions. If we had not been home our possessions would have been bits of ash floating across the meadow, hence my interest in monitoring our smoke alarms. So my question is, will my vision actually work? And, which 'doorbell' do I need? Thanks for your time.