Siren(s) wiring on DIY board



Hi there

I'm using a DIY board for my setup, and I'm using hassio
My zone sensors are connected on D1,D2,D5,D6 and D7 pins and all is working as expected, meaning that all sensors are working as expected and I can activate/trigger the alarm in hassio

Now I'd like to wire my sirens.

I have an indoor one and an outdoor one and they are wired ATM to the original board (see attached picture)

how should I connect them to my board?