http://www.youtube.com/watch?v=Dc7Z9KEj654
Here is a video recording I took of the Allertor at Thomas Memorial Stadium in Niles, Michigan during the Severe Weather Awareness month. Any other month then April tests this siren 1 minute long including the rest of the sirens in Barren County.
http://www.jmarcoz.com/sirens/niles1_mi.jpg
This is a photo of the siren on The Siren Archive (which you already know) but this is to show you all that its finally been recording and its 9-12 Port.
http://s279.photobucket.com/albums/kk123/Siren1000T/
The first 16 photos are my own of the Allertor.