Whelen 2910+VisuAlert siren test, North Chicago, IL 

A bird fell off the bottom the siren when he starts talking

Listen closely and you can hear alternate wail!!!!

I love the background alt wail, sounds so cool

1:46 listen really carefully you can hear a thunderbolt 1003 doing alt wail (maybe a different siren)

Love the ambiance with the 'bolts and Mods after it winds down!

FUCK YEAH! We need more bilingual announcements!!!

I think the first video of a visu alert whelen doing other signals than chimes

Does it still do voice announcements in Spanish announcements? And Full alert

I still live in North Chicago and I hear that every Tuesday the month

Whelen’s 560hz is subtle but very good at warning people...

I do not miss going to school up there.

Where I live our sirens don't speak in Spanish

Attention. This was a test a Chicago. This was only a test. 0:15 System for the outdoor warning system. This was only a test. 0:19 Doors Chicago 0:22 This was only a test 0:26 A boy is we’re going to Louis 0:33 0:33 schedule 0:35 only a test I 0:44 Chicago Chicago tem suas OS S 1:01

nice

Why at the beginning of the alert it stop for a second then Re activate, been wondering for a while now.

It looks like hockey pops siren.

And dose anyone know where I can get the frequency for tornado sirens?

Cool to see these doing normal signals! All I've heard with a 2910 VisuAlert is Whoop and Voice (check my video)

What fell out of the siren? A bird?

This is a test! Speakerboxxx!

dont like the alert tone much

why whelen have visualert lighting

Is sounds like Israel's