Amseco BZ-54VL

This is a “motor horn.”

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.
FCI B5

FCI B5

Category :
I have also seen this pull branded by Kidde and Thorn.
ADT ADT-PS

ADT ADT-PS

Category :
Personally, I think that the ADT logo on the head of this smoke is a bit ugly.