Help with Advanced Home Automations using Apple Home and Shortcuts Using Multiple Triggers!

I have two dozen contact sensors around my house on doors and windows, and a siren hooked up to a smart plug, and a dummy smart plug that acts like an alarm system armed on/off. I'm trying to use Automations/Converted to Shortcut but can't figure out what action to start the Automation with and then how to use IF rules. In Google it allowed me to have multiple triggers and then link a condition (IF) to it to result in an action.

Basically I'm trying to do this...

Window 1 OPENS; OR

Window 2 OPENS; OR

Window 3 OPENS

IF...

Security System plug is ON

THEN

Turn on Siren plug (or I could have it run a scene that turns on a bunch of smart items)

The only way I think will work is creating an Automation for every single sensor like below...

Window 1 OPENS

IF...

Security System plug is ON

THEN

Turn on Siren plug (or I could have it run a scene that turns on a bunch of smart items)

...and so on

I'd greatly appreciate any help!