Wheelock MT-12/24R This is a horn-only multi-tone alarm. Brand WheelockModel MT-12/24RManufacturer WheelockType Alarm (Horn)
Amseco SSS2-75110 Category : AmsecoThe strobe part of this alarm is actually just placed over what could serve as a stand-alone speaker.
Aames NC-S1 Category : AamesWhen the glass breaks, the button behind it gets released, which in turn triggers the alarm. No documentation available.
Notifier NBG-12LX Category : NotifierUnlike my other two Notifier NBG-12LX’s, this one has a module in it.