http://www.youtube.com/watch?v=etPrj5KE4IU&fmt=18
Never heard an 8/12 port siren running on 50 HZ before. Sounds like it might have a dual rotor setup, like a Soundmaster. Any ideas on what this thing might be?
It also sounds like there's a high pitched single tone siren in the background, sounding at the same pitch as a Model 5 or STH-10, but in order for it to be sounding at that pitch, I would think that it would have to have 14 ports.