the sick Allertor doesn't sound that bad but there is something wrong with it.

Thats funny! This really does a good job of showing the air flow through the siren

Monticello, WI's Decot. http://i145.photobucket.com/albums/r218/fosters6220/CIMG3643.jpg http://i145.photobucket.com/albums/r218/fosters6220/CIMG3644.jpg http://i145.photobucket.com/albums/r218/fosters6220/CIMG3645.jpg http://i145.photobucket.com/albums/r218/fosters6220/CIMG3646.jpg http://i145.pho...

TSMaster5150 wrote: a 1000 sounds like it's having some problems during it's wind down.

Ive noticed a lot of 1000s do that when they wind down

looks like a 1212 on the pole

Seems like it has a lower tone than a whelen does

That is so sad there must be someone else who could have used it

How are ACA sirens controlled? Do they use something like an AR/AF timer?

I'm going to have to say Tunderbeam

Wonder what the wasps think when that Thunderbolt roars to life