Simplex 4903-9105 Category : Simplex I think that this strobe plate actually uses the same housing that the Simplex 4903-9101 uses. The strobe is obviously different. Brand SimplexModel 4903-9105Manufacturer UnknownType Alarm (Strobe Plate)
System Sensor SP1W2475ADA Category : System SensorThe strobe portion can detach from the speaker body.
Gentex GEC24-15/75PWW Category : GentexThis Commander 2 could be used for a purpose other than fire protection due to its missing “Fire” labels.
