When the alarm goes off

[Tayls]

I turn off and then immediately reset before I do anything else. This lets me hear if anything is going on and a second trigger indicates something which needs investigating (how ever you choose to do this).

This is the same approach that we use. This way, if another beam/sensor near to the first one is then triggered, then you know that something is up and can then initiate your family's response procedure (and, of course, ask that the AR attend at the scene).