I managed to get the Siren6 to chime when one of my door sensors opens. However, it is through the group associations and not through OpenHAB rules.
If you have a device that can send the “basic set” command through an association, you can link that group to the Siren6 node and when the sensor sends the “basic set” command to the Siren6 node, the Siren6 will play a chime. The sound it plays in my case is #6 from the list here: Siren 6 sound previews. : Aeotec Help Desk
Presumably that the sound it plays might be configurable somehow, but I’m not sure off hand if that part requires the new command class or if it can be done through sending data to association groups (since according to the manual, it sounds like certain association groups “mirror” the end point - I’m not sure if that means the association group gets triggered when an end point is triggered, or if sending data to an association group is like sending data to the end point?).
The configuration looks like this in my test setup with a HomeSeer door sensor as the trigger and Node 8 being the Siren6:
