Smoke alarm monitoring via audio

At first blush, this is a device that should not have to exist. The alarms should have their own built in notifications.

But in real life, almost nobody is going to replace everything in their house with connected versions overnight. So this fills a gap in the meantime.

I just hope the team is thinking beyond just smoke and CO2 detectors... there's a LOT more potential here.

And I wish they would have the notification go to a webhook instead of (or in addition to) the mobile device. I'd like to control what happens with notifications myself, thank you.