Simplex 4255-1 Category : Simplex This is a moderately old heat detector. Brand SimplexModel 4255-1Manufacturer ChemtronicsType Heat Detector
National Time SG-C3HSZ Category : National TimeThis is the equivalent of a Gentex Commander 3 horn/strobe.
Simplex 4098-9716 Category : SimplexI don’t think that I have a base that is compatible with this head.
