Just wanted to share what I was able to get working yesterday. I wanted to have doorbell presses play over the whole home Sonos system so that we could hear the doorbell ringing when we are upstairs.
I had an extra NodeMCU laying around so I ordered an RXB6 433Mhz receiver to sniff for the doorbell triggering the Chime and published that to an MQTT topic. From there I used NodeRED to do the rest of the magic.
If you want to read the full write-up: check out the Gist.