Pretty sure for some of them. Most systems are just EST-3 (some are Notifier, like Flamingo which used to have an FS90, Siemens in CityCenter, and Simplex like Excalibur which has EST4 now). I also did find a TikTok of the Rio one inside a room where you can hear the message clearly.
Also another interesting thing is UCLA here in California, some of the buildings have older Autocall systems. Found what appears to be a Grinnell-Autocall voice evac in an older hospital building with non-ADA Wheelock speaker strobes, which included a Wheelock ET-1010. It does whoop according to the evacuation plan near the elevators iirc.
I also found this on a FB post a while back, which is at UCLA Lab School just West of the UCLA Campus. It’s a Thorn-Autocall system, judging by the square logo on the bottom right on the panel door.