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<p dir="ltr" style="margin-top:0; margin-bottom:0;">This is a rare vintage IBM fire alarm horn in red, model 4030-2B. It was manufactured in the United States and is a great addition to any …

Find many great new & used options and get the best deals for Vintage IBM Simplex 4030-2 Fire Alarm Double Horn Air RAID Siren 715720 720087 at the best online prices at eBay! Free …

Original ca 1940s-1950s IBM Type 4030-2B double projectorfire alarm or air raid siren. Plate has “International Business Machine Corporation, Madison Avenue, New York”. Shows that this is …

Here's an overview of my International Business Machines 4030-1B 12VAC horn. Interestingly enough, this horn came from youtu...

Feb 24, 2013 · A test of an IBM 4030-1B 12VAC horn coded by a Notifier pull station. I apologize for the lack of videos lately. College has kept me very busy, but more videos are on the way …

The IBM iHorn is made from a vintage IBM Signal Horn. It is a Simplex 4030 2-Horfire alarm or air raid siren from the 1940s. These horns were used in factories or other commercials settings. …

Jun 9, 2022 · What I believe to be an early model IBM 4030-1 that dates all the way back to more than likely the 1930s. I'm not sure what brand this horn is if it was rebranded by IBM; the …

This rare vintage IBM fire alarm horn is a must-have for any firefighting and rescue enthusiast. Made in the United States, this 12V AC red 4030-1 alarm is a true piece of history.

Aug 10, 2014 · IBM 4030-series: These horns were originally made by Benjamin Electric and go back to the 1940’s. After Simplex bought out IBM’s fire alarm division in 1958, Simplex used …