For the “final touch”, we added NEW Selector and Gain knobs! This siren was bench-tested for 30 minutes with all functions tested and verified to work as expected when it was new, per the manufacturer, Federal Signal. Siren is compatible with CP25 or a similar loudspeaker and has an output of approximately 52 Watts RMS.

In 1967, the Federal Signal Corporation began manufacture of the PA-20A Interceptor siren, which featured a synthesized electronic siren tone. The unit provided three distinct sounds, a microphone for public address, manual operation, and amplification of radio messages.

2020年1月10日 · RESCUE 1 SIREN by SONIC SIGNAL CORP.

2021年5月19日 · The second video of this siren, it's been a while since it has been powered up. Connected to a different speaker this time around and the acoustics at a tad...

Vintage Federal Signal PA20A, recently repaired. In-between tones are towards the end.

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SERIAL NUMBER: 2D7107. This Federal Signal Siren has been professionally repaired and/or refurbished. The cosmetics are “nearly perfect-as-you-can-get” and this has been restored for the PA20 owner who wants it ALL!! Its enhanced look includes a BHF-CUSTOM CHROME CASE!

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SERIAL NUMBER: 2E18900. This Federal Signal Siren has been professionally repaired and/or refurbished. It has been bench-tested for 30 minutes with all functions tested and verified to work as expected per the manufacturer, Federal Signal. …

The PA15 (Director) and PA20 (Interceptor) both have wail, yelp, and alert tones. These sirens were in production from about 1962 to 1966. Both sirens have low-pitched wail and yelp tones. There were nine variations of each model. I have manuals for PA20 series E1, E1A, E1B, E1C, E1C-C, E1D, E1D-J, E1D-S, and E1E.