As above. I put my dslr inside the dry cabinet for the day & i jus came home from work, the RH drop to 34% i was shocked and faster turn the knob to 3 o'clock and the RH goes up to as high as 52%. I took out my dslr and play ard see if it spoil or anything. but i dunno how to check if it is spoil or etc. power stil able to on and shoot. What will happen to my camera and dry cabinet issit spoiled or due to weather problem.