The first device that my Sense identified (Heat 1) comes on at night and lasts for a few seconds, but repeats. I believe it is an electric blanket, although unaccountably Sense thinks it was on this afternoon when no one was home. I can’t help but comment that the search term “blanket” yields 0 results on this community, nor is it included in the categories or subcategories on the app. Curious as to whether this looks like an electric blanket to others.
I think someone posted on an electric blanket very early on (8-10mos ago for obvious reasons). It looked like what you have there - you might see if it shows up if you leave it unplugged for a couple of days.
system closed #4