World Trade Center Fire Alarm System History

Only pointing out the fact that Clyde saying that supposed Wells Fargo/ADT/Pyrotronics FACPs using CPUs makes no sense as most newer panels use such, that’s all (though I also don’t really know what he’s talking about/trying to say either).

I think he’s trying to say that some of those old and large systems used mainframes (very large early computers) as their CPUs.

Never heard of those but okay (though then again I wasn’t really aware of the exact definition of “mainframe” either). Anyway, we digress…

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Thats exactly what i ment

Check this page Alarm History

As in cmp processing units

I found a rather, interesting demo board, its basicaly a firecom 8500 demo board with some stuff.

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Yeah, found that guy’s channel some time back myself: seems as though he’s taken it upon himself to figure out just exactly how the Firecom 8500 works, as he determined the tone generator it uses, for one.


Executone compressor like on the original operations control center that I found


And I found this on an old acme brochure it looks a lot like the firecom 8000/8500

Which securiton panel