Yep, aware of what Konnected.io is and isn't. Thanks for the heads up though - people seeing this post might not be aware. It's very DIY for sure.
What I was hoping for, is that the speaker input could be used for me to trigger a lower volume buzz than the main siren. So I could use it to buzz when the alarm is arming on exit and needs dis-arming on entry. If I can't use it, it's not a massive deal as I have another option.