Dramacydal503

This is the Unitrol 480k by Federal Signal. It features only Wail and Yelp, but with an interesting twist. The Yelp has been placed in the primary siren slot so when you activate the siren, it turns on Yelp while the other two slots are occupied by the Wail tone. What this does is when you activate the Wail tone, there's a chance that it will activate in the middle of the wind up/down loop and this is just how the real Unitrol 480k functions. Other than that it's just a good sounding siren, with flawless looping and good clarity.