I thought so but they look different from the last time I had one. I quit using them long ago as I got rid of them failing.
You may try a new one but I don't you have much to worry about in the tank. You can also buy a hygrometer made for cigars fairly cheap. What I like about them is they can be calibrated.
I use these in my cigar humidors and they have been great. Ideal cigar conditions are 70F and 70% humidity so they can withstand most environments.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Two concerns I have.
1. The fan blowing across the tank. You really don't want that. The fan being opposite from the tank moving air will work just fine.
2. The rectangular hide is not much of one. You did a nice job making the door but because of the color of plastic it is made from it asks light through as well as the snake to see movement through it.
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