Wire type for peripherals on residential burg/fire panels

[Effenpig1 <dirtyspicevent@xxxxxxxxxxx>]

For residential burg I use 18 gauge FPLR to wire keypads,
transformers, sirens, and of course fire devices ( and CO). I do this
whether or not the system will include fire devices initially. My
thought being if I don't and the owner decides on fire protection down
the line it would be more work.

Curious as to how other installers deal with this. The company I
worked for before I started my business never used fire wire, even for
the fire devices themselves.