The Desiccant is a unique cell that absorbs dampness and prevents condensation from trapped air. Blue crystals turn pink in the centre window to indicate that the device needs resetting. This is done by reheating the device in the oven to reset the crystals.

Contains 40 grams of Silica Gel that protects 3 cubic feet of enclosed space. Needs No Electricity, can be reactivated indefinitely. Lasts a lifetime.
Recharge by heating in oven for 3 hours at 300F or until window turns blue again.

Great device to use in your case if you have electrical equipment, it will help absorb the moisture thus adding additional protection to your sensitive equipment.