Last STL-10 siren?

[AtifinderSF]

It on Sunnyside Elementary School and here is a photo of the last Moodle 5 and thunder bolt in San Francisco

Model 5: https://postimg.cc/jD4T1Smx

Thunderbolt(red unique Ati hpss-32 speaker arrays on three sides of tower black thunderbolt) https://postimg.cc/CRQ7SjWm

[AtifinderSF]

Also I found this at a church it’s not listed as a sf siren system siren and a can’t find any info it looks like a ati hpss?
https://postimg.cc/ZC9zkQzc/b3598fbf

[CanadianTbolt1003]

It's an ATI HPSS-16.

[AtifinderSF]

Ok I found this old photo and you can clearly see the stl-10
https://webbie1.sfpl.org/multimedia/sfp ... D-4238.jpg

[HudsonRiverSirens]

It's an ATI HPSS-16.

It's not. If it's at a church it's just church bell speakers. ATI outsources their speakers so they're probably speakers from the same company.

[ArxCyberwolf]

The speakers aren't ATI's. They're made by a Taiwanese company called Kingstar. They've been in use since at least the 1980s as a Swedish warning siren from 1981 used the same speakers.