Hi ShadowFist,
I wish you had a brilliant Christmas! 
Thanks for the suggestion! We have done our best to optimize the siren, and we have now integrated both Smoke and CO siren types. I have shared an update in another post, as development is almost complete. Could you take a look and see if this suits your needs?
Heiman smoke alarm HS1SA-EF-2nd new features in ZHA and Z2M - Home Assistant Community