HEIMAN WarningDevice-EF-3.0 stop after 5 seconds

Hi everybody,

I have a problem with alarm HEIMAN.
When enable it, it stop after 5s. I don’t understand why.

Juste enable with ZHA, stop after 5s
I test with alarmo where I can select duration, same problem, just 5s.

If somebody can help me ?

Thanks a lot,

I have this same problem. did you find a solution?