Inspired by Siren1000T. Thought I might do ASC/ACA since I did Federal Signal. All audio goes to their respective owners. See credits for video links.

Timestamps:
0:00 Analog ACA Version 1
0:39 Analog ACA Version 2
1:03 Digital ACA Version 1
1:34 Digital ACA Version 2
2:08 ASC Version 1
2:28 ASC Version 2

Credits:

Analog ACA Version 1:    • ACA Allertronic AL-4000, Amarillo Tx  

Analog ACA Version 2:    • ACA AL-4000 Tornado Drill | Bloomingt...  

Digital ACA Version 1:    • HAPPY NEW YEAR!!! ACA Alertronic AL-6...  

Digital ACA Version 2:    • ACA Alertronic AL-6000R | Alert | Har...  

ASC Version 1:    • ACA Alertronic AL-8000, siren test, R...  

ASC Version 2:    • ASC I-Force 800 Siren Test - LaPorte ...