There is NO accuracy as the humidity constantly changes. And you can't control the sillica gel either. Either replace all or leave it. And most of the time, by the time you realise the humidity is at a dangerous level, it already has been sitting there in that condition for some time.
So for a thousand dollar investment, do you think it's worth to save the little bit of money which could equate to mebbe about a 8gb normal CF card?
Thanks guys, saw the same one I mentioned priced at $22 at TK Photo.
My only concern with dry cabinet is the power usage. As I am not living in my own house, I need to maintain my electricity usage. Decided not to get the dry box YET as my rental room does not have much space now.