I've had the chime exposed as a switch for a year and a half. I use it in an automation to turn the alarm chime on at dusk/off at sunrise.
Ensure you have the packages definition in your configuration.yaml
as demonstrated below,
as well as the alarm_code
present in your secrets.yaml
.
Once that is done, add the alarm_chime.yaml
to packages/alarm/
folder, updating the two entities as commented at the top of that file.