What is the most mysterious siren?

[DominatorSirens]

I would say the AL-7200, as not much is known about it.

What do you think?

[JJ_OFU]

The B&M Compressed Air Siren. It's got a unique siren design as the rotor is connected to a fan where it's powered by compressed air. What I find interesting is the lack of units that exist today with the only known one in a museum.

[DominatorSirens]

The B&M Compressed Air Siren. It's got a unique siren design as the rotor is connected to a fan where it's powered by compressed air. What I find interesting is the lack of units that exist today with the only known one in a museum.

Wow! I have never even heard of that siren until just now. That is really cool

[BGE1012AUS]

The B&M Compressed Air Siren. It's got a unique siren design as the rotor is connected to a fan where it's powered by compressed air. What I find interesting is the lack of units that exist today with the only known one in a museum.

Would you know if you would have a photo of it? Actually wonder if it’s possible to recreate it and considering probably the Patent long expired

[DominatorSirens]

The B&M Compressed Air Siren. It's got a unique siren design as the rotor is connected to a fan where it's powered by compressed air. What I find interesting is the lack of units that exist today with the only known one in a museum.

Would you know if you would have a photo of it? Actually wonder if it’s possible to recreate it and considering probably the Patent long expired

B&M_Air_Siren.jpg (269.89 KiB) Viewed 16653 times

[HDN]

That's a neat siren! I wonder how much air that took to run... I find it interesting that it came out of a Santa Fe yard - I imagine that ran on compressed air from a car maintenance shop or something.

[I_Like_Mobil_Directo]

The B&M Compressed Air Siren. It's got a unique siren design as the rotor is connected to a fan where it's powered by compressed air. What I find interesting is the lack of units that exist today with the only known one in a museum.

Would you know if you would have a photo of it? Actually wonder if it’s possible to recreate it and considering probably the Patent long expired

B&M_Air_Siren.jpg

it actually uses steam, not compressed air

[fedsig2001dc'24']

probably the cti smr-15, not much in known about them.

[Hamham8812]

Possibly the Alertronic 5000

[doogledean91]

ACA Sentry 95, I'm not even sure is any units were made