Silent Knight SD505-AHS This is an analog heat detector. Brand Silent KnightModel SD505-AHSManufacturer Silent KnightType Heat Detector
Simplex 4259-25 Category : SimplexThis is a photoelectric smoke detector from the mid to late 1970’s.
Amseco BZ-54VT+RSD-24L Category : AmsecoThat rubber band is holding the strobe to the unit since there are no screws keeping it secure.
Silent Knight SK-PHOTO Category : Silent KnightPersonally, I think that the Silent Knight logo on the head of this smoke is a bit ugly.
