Product review (5 stars): Good construction, inexpensive, and does what it's supposed to do.. Take temp / humidity setting.
I bought a bunch of these Temp and humidity meters.  They are in Celsius, but, I wrote the Fahrenheit number on the outside.  Not pretty, but I didn't care.  They were very low cost and that's what I needed.  I use them in my Meal Worm bins to keep the constant temp/ humidity.  They work like a charm.

The only draw back.. They are shipped from China.  It took almost two weeks to get them, but I was quite aware of that.  If you don't need them in a hurry - perfect solution, and low cost.

They seem to be well made - for what they are.  It's not a complicated set up and or product.

They come with a an attachable little stand that you see in the pics.  or you can just hang them without the stand.  The rear of each dial has a hole for screw or nail to hang them on a wall.  It's perfect.  Was able to just set them inside, standing up on their own, in my meal worm bins - Perfect inexpensive solution - for my needs.