Best to keep replying to a recent post to keep it all in one post, not only for yourself, but for others to not have to repeat the same yesterday's answers, and for others down the track who do a search for the same problem.
Re your new question on reaction for 212 F, that is a pig in a poke if it is a repo quail.
Chinese made so quality is so-so .
I have two and out of the box, they hardly read red at all .
After a bit of use, you will find the red separates, and air gaps appear in between .
A bit unsightly, but on both of mine, the air gaps have now gone to the bottom out of sight under the red, and now the red pushes up to a very good height, almost as you should expect, it runs mid way normal and near the top when getting hot.