Simplex 4903-9101 Clearly, this alarm is not in its prime. Brand SimplexModel 4903-9101Manufacturer UnknownType Alarm (Strobe Plate)
Wheelock FS6-61 Category : WheelockNothing like a vintage Wheelock bell! I got this with my Wheelock NC-OS pull.
EST 882-2B Category : EST/EdwardsThis unit has an electronic horn rather than an electromechanical mechanism.
