Vintage Rare ADT Fire Alarm Heat Detectors.

I have never seen heat detectors like this.  Made from thick white plastic with what looks like a clear plastic dome, a black plastic looking dust cover base and an aluminum bracket.  Only one has the black dust cover on and only two have the aluminum bracket on.  There are four of the black dust covers and three of the aluminum brackets that have been removed.  I have done a quick clean up (not extensive) on one of the heats.  Look at the pictures closely.&nbs...p; Three of the heats have a yellow dot on them and three have a black dot on them.  You are purchasing only one detector at this price not all six.  Let me know if you want a yellow dot or black dot detector.  The first five sold get the dust cover and bracket.  The last one sold gets the detector only, no dust cover or bracket.   



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