Wheelock E50-24MCWH Category : Wheelock This unit still has its backbox attached to it. Brand WheelockModel E50-24MCWHManufacturer WheelockType Alarm (Speaker/Strobe)
Space Age AV32+2DCD Category : Space Age ElectronicsThat is an electromechanical horn on the rear of the strobe plate.
Grinnell IXA-RMS Category : GrinnellThis unit was taken off of a TFX-400 system at Brigham Young University.
