Amseco BZ-54VT+RSD-24L Category : Amseco That rubber band is holding the strobe to the unit since there are no screws keeping it secure.
Simplex 4259-25 Category : SimplexThis is a photoelectric smoke detector from the mid to late 1970’s.
Wheelock ET-1080-WS-24 Category : WheelockYou can’t really tell from the pictures, but the strobe is practically falling out of this particular unit.