World Trade Center Fire Alarm System History

What tone of the panel

The first tone sounds like that one high-pitched temporal 3 one, albeit higher-pitched than usual (don’t know if it has a name but I know it used to be temporal 4 before Edwards changed it to temporal 3), & then what sounds like some kind of whoop tone: weird if you ask me since most voice systems usually have just one tone for each condition (unless those videos were taken in two different buildings).

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sounds like a code 3 version of the code 4 EST tone commonly used in Boston, The slow whoop would be the one commonly found on older EST panels like the EST2 which is popular in NYC

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Some systems in NYC have what’s called a Fire Safety Director Inquiry Tone which sounds on all floors except the affected fire floors if an alarm is not acknowledged within a certain programmed time in case the FSD is not at the command station during an alarm activation to hear the Alarm which may be the case here but I’m not sure.

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By the way do you guys know any tones/videos of the irc 3

I think @VRRyan has a IRC 3

I do not own an EST IRC-3

Oh, I thought you did.

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This is from a school in New York

That pull was most likely from the woolworth building on 9/11

Woolworth building had a Firecom 8500 before just like 7WTC and is now a LSN2000, those were never used at the Woolworth building and the Woolworth building was not affected by 9/11, those pulls belong on a vintage high voltage ACME system

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I honestly have no idea why at least two people have posted photos of that ACME pull station if it supposedly has nothing to do with the systems at the former WTC complex.

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I think the citicorp building currently has an 8500 or 1750 (probably 1750)

That acme pull could have been from the century 21 building

It does have a Comtrak System with old Firecom and Comtrak devices and a mix of EST stuff, but lets try to keep this topic on World Trade Center’s Systems

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I think the lsn 2000 has the 2x whoop

By the way i think that tone with the 2x whoop/chime was a standby tone, because standby means you shall standby for further instructions while the panel has notified the fire department

I did think firecom rebranded system sensor v400 speakers though I’m not exactly sure

No, they only rebranded Space Age and Wheelock and again this channel is for information about the World Trade Center’s systems and not specifically firecom so let’s keep it that way.

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