I can’t explain it any better than google, but the “humidifier” we have in the gun safe (goldenrod) is far different than the humidifier we keep in the basement. I assume what you have in the camera cabinet is similar to what we use for the guns.
The camera dehumidifier is called an electronic dry cabinet. In my gun safe I have these crystals that suck out the moisture I should buy one of those goldenrods they're pretty popular down here.
Here's the camera cabinet -
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