It is digital... and I have had it for a couple years. I'll salt test it again/ or get new batteries

When I let the lid fall closed it makes an airy whoomp sound, but when I try the dollar bill test it does pull out, but there is some resistance, but not enough to make me feel like I am going to rip the bill.

I got the humidor at cuban crafters, it is one of their budget models...
heres a link http://www.cubancrafters.com/products.php/item_id/260


I'll put the hygrometer that came with it in there and see what it says... its plastic and feels really cheap but after adjusting it was testing pretty accurately.