Last night something spooky happened, something I have never seen before. To explain the anomaly, I must first explain the behavior of my Google Nest smoke detector as I have observed it for every night prior to last night, for four years.
The Google Nest smoke detector in my bedroom has a ring-shaped dim light and a motion detector. Whenever I get up from my bed to go to the bathroom, the dim light of the smoke detector lights up. When I return to my bed, the dim light of the smoke detector goes off within a few seconds of me returning to the bed. I presume that this is some feature designed to provide a little light for anyone trying to exit a room at night, when there is a fire. I think a better design might have been to only show the dim light when the smoke detector goes off. The light of the smoke detector does not show during daytime, unless the alarm goes off. Below we see the Google Nest smoke detector. The first photo shows the dim light on, and the second photo shows the light off.
Last night I awoke around 2:00, and began to have some vivid thoughts of my deceased parents. Just then I noticed something very strange, that I had never seen before. While lying in bed motionless, I noticed that the light on the smoke detector was still on for quite some time. Lying completely motionless in bed, I counted slowly from 1 to 120. During this whole two minutes, the smoke detector's light was on. I had never seen this behavior before from this smoke detector, not once in four years. Prior to today, its dim light always went off a few seconds after some motion caused it to turn on. This Google Nest smoke detector is powered by a direct electrical current, and has no dependency on a battery.
Wondering whether some insect might have caused this unprecedented behavior from the smoke detector, I turned on the regular light in the room, and looked for an insect. I saw none. I then went back to sleep.
Later around 4:00 AM I woke up again, and observed something similar. While lying motionless in bed, I noticed the anomaly that the smoke detector's light was on. I lay motionless in bed for five minutes, slowly counting from 1 to 300. During this whole time, the smoke detector's light was on.
Again, I got up, turned on the regular light, and looked around for an insect that could conceivably have caused this unprecedented behavior from the smoke detector. I did not discover any such insect, and never felt or saw an insect that night.
Why did the smoke detector act in this unprecedented way, which I have never seen in four previous years I have had this smoke detector in my bedroom? An interesting speculation is that the night's incidents were triggered by my vivid thoughts of my deceased parents. The unprecedented behavior of the smoke detector started while I was having such thoughts. See here for another spooky smoke alarm anomaly causing me to wonder whether some paranormal effect was involved. The 19th century provided very many reported anomalies (such as mysterious rap sounds and table levitations) in which people seemed to get signs from the Great Beyond. You can read about such anomalies here.
It would make an interesting experiment for others with Google Nest smoke detectors to see whether they observe the same anomaly after having vivid thoughts of their deceased loved ones.
Postscript: The next evening the Google Nest smoke detector in my bedroom returned to behaving as it had behaved for the past four years before this day, with its light always turning off a few seconds after the cessation of any recent motion nearby it. But there was on that evening the anomaly below, not looking like anything that showed up in the next photo of this window curtain from the exact same position.











