my house came with a hardwired alarm system and its a fuckin mess. theres 12 door/window sensors, some glass break sensors, smoke alarms, 3 keypads.

the board is in a closet and a fucked up mix of half a million splices because theres only 4 zones between the 12 doors/windows.

https://i.imgur.com/25uSsnp.png

this is excluding the absolute rats nest above in the attic.

i bought a zone expansion module so each door/window can be its own zone, but the rats nest is making this not great.

the goal is to essentially rip everything out that is going down into the wall, splice everything in the attic, then send down just a few 6-12 conductor cables. i already traced out all of the cables in the attic, so that part was easy at least.

im leaning towards 18/8 thermostat cable because some things need 18 gauge and i don’t really want to have some things on 22 gauge, then others on 18. rather just keep it simple. and its widely available/cheap.

copper is copper, but is there any reason why i should use a different type of cable with different sheathing or something?

probably just overthinking this.