HomePod HomePod making a random chime sound

[jjk454ss]

I don’t know the best way to explain the sound. But one of my HomePods is making a chime. Kind of a ding dong. I don’t know why. And I can’t find anything in a search partly since I don’t know how to explain the sound.

Anyone know what I am talking about? And what the sound means?

 

[jjk454ss]

Ok. Turns out it’s my Ecobee thermostat. At least I think it is, since it’s flashing a green light. Still don’t know what it is, but I think now I’m looking in the right direction at least