Simplex 4903-9403 Category : Simplex The strobe on this alarm model isn’t directly connected to the alarm, oddly enough. Brand SimplexModel 4903-9403Manufacturer SimplexType Alarm (Horn/Strobe, 4-wire)
Gentex GXS-4-15/75WR Category : GentexThe previous owner of this alarm “modified” the wire leads coming out of the back.
Wheelock ET-1080 Category : WheelockThe white and red versions of this speaker both have the same model number.
Honeywell S464A Category : HoneywellThis unit is a bit more beat up than my other Honeywell S464A is.
