I know this is a old thread, but I can't help but say this, find the CEO/former CEO of
CTI, if you can't, I suggest going to the city and asking who they bought the
CTI sirens from, and they might have more information, but personally, I won't do this

Also, on the third google map link... It is now a 2001-130 ): On the bright side.. you can see someone working on the controls

Honestly, I'm desperate for information too. Especially that weird omni-directional one!
I own: One complete SiraTone, another SiraTone control module, a 1600W MC, 2 old ATI controllers, 2 round ATI horns with drivers, a ATI-DSA 4 thing, a Federal Signal FC, AR timer and Siratrol, and a small CD&F.