http://www.youtube.com/watch?v=qdVfXde2cbw - The Biggest Loser Episode 9, Season 1; Jillian pulls an EST dual-action pull station, setting of a wailing siren.
http://www.youtube.com/watch?v=Kuh9kysr7po - 6" bells in continuous; stops at 0:14.
http://www.youtube.com/watch?v=wHGVvA_-Wdw - Unsynced Gentex Commanders in code-3, and you can also barely hear what either sounds like a TrueAlert, U-MMT, or piezo in code-3; it’s hard to tell because of the noise. The alarms top sounding at 1:02, and at 2:05, you will hear what sounds like a 4" bell, used to signal an all-clear to the students.