I have a 4-wire (I think) intercom/doorbell system in the my house with 3 indoor stations (Pacific Electronic 3404) and one outdoor station.
My transformer is in the (finished) basement on the west wall of the house; the intercom stations are roughly in the center of the house, and the door is on the southeast side of the house. All wires immediately go behind sheetrock.
I haven't been able to find the AF-1000 master unit anywhere in the house, though i know that it is somewhere in there.. Is there a procedure that I can use to find it short of ripping out all the sheetrock to trace the wires?
I can't imagine that it is up to code to put this behind sheetrock, but I've looked all over the house for it.