I did indeed notice the lack of the TrueAlert logo on the notification appliances. I thought that the older model TrueAlerts didn't have the logo on them. Guess i was correct. I never heard of the "QuickAlert" name before though. And indeed, a search on Google led to nothing on them. Guessing Simplex used them for a short time before the TrueAlert design was finalized. And the two-stage explanation of the horn + strobe setup would make sense. I never thought of that before, because TrueAlerts can just do audible/selective silence, or whatever Simplex calls it. But i don't know about the older model TrueAlerts/QuickAlerts. Thanks for your input though! Greatly appreciated.
And TrueAlerts do come in chime and multi-tone models:
TrueAlert chime/strobe:https://www.youtube.com/watch?v=woZGwP-urCI
TrueAlert multi-tone sounder:https://www.youtube.com/watch?v=6Xov_7bnfks