Round Digital Hygrometer

[Lopaka]

That one looks exactly like the one I have in my 25 count humi and it's work great for me. Can't say it's the exact one. However it looks the same.

[Empire23]

I have the same one and it works fine in my 150 count. I paid that price for mine (I thought it was kinda spendy) but I didnt want to leave my sticks in my humi with just the analog in a new humidor while I waited a week or so for it to be shipped.