Whelen Alpha Series 12R
Includes Wail, Yelp and Priority tones. Also includes Double Doppler's Bullhorn. These sirens are used in Great Britain.
There are two versions included: one for normal installation and one for Siren Mastery.
Enjoy!
Please do not reupload or redistribute this without my explicit permission.

Credits:
-Converted by Albo1125 from a GTA IV modification by gta4ishardcore.
-Full credits for the Bullhorn go to Double Doppler.