Script / automation on notification on my mobile phone

Hi all

I have a Scantronic alarm which uses ‘secureconnect’ app, which gives me set/unset/alarm gone off notifications on my mobile devices. I can’t find any way to link the alarm directly to HA, so exploring alternative options.
I would like to run an automation or some scripts when the alarm is SET and UNSET, eg turn lights / TVs etc off.
How can I do this? Sending all notifications to HA thorugh the companion app is very draining, of course I could buy a cheap mobile phone to run this. Can I use tasker to do such actions?

Thanks

Anyone please?