Not firing on all cylinders are we Mr. Whelen? This siren was upgraded to a new RTU over the New Years, and while it does activate and do all of the modes and voice announcements, the timing of it all from the computer controlling the whole lot is messy. It never gets a chance to wind down out of alert completely, seems to switch from wail mid-cycle, and switches to air horn then voice with no transition. They apparently randomly have them cancel out at the very end making the sirens say "This has been a test of the outdoor emergency warning" leaving out the word "system."
https://www.youtube.com/watch?v=R9VFMiaxXME