Simplex 4259-25

This is a photoelectric smoke detector from the mid to late 1970’s.

Also in the collection
Simplex 477-669

Simplex 477-669

Category :
Oddly enough, the model number on this particular smoke doesn’t fit the typical pattern for Simplex devices.
GE 521BXT

GE 521BXT

Category :
I think that this smoke detector might be intended for use in security systems.
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