So for some reason I was going through google patents and I found this:
It was accepted in 1986 and it’s supposed to go on your Christmas tree. Never seen this, interested to see if anyone else has any info on these.
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I don’t have a photo but I once spotted the ultra-rare Probe 601 for sale on Ebay: it’s literally a smoke detector disguised as a Christmas ornament (I wanted to get it but it appears that NLind did instead).
Jan Eaton (or missj_73 here) also has a detector called the “Calfax NOMA Guardian Angel” which is a combination smoke/heat detector in the shape of an angel ornament (which yes, you can hang on your tree just like the Probe 601).
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This kind of makes sense, as with the incandescent Christmas lights and a real tree, it could end in a crispy surprise.
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