... for all electronic components.Function: This dry cabinet is designed to protect the electronic gadgets and collectable items ... certain extent on some Moisture Sensitively objects. What is relative humidity? Relative humidity is the amount of water vapors in the ... , PCB, etc.30~40%RHPrecious Machine, Medicine, Samples, Seeds, Pollen, Dried Flowers, Spices, Tea, Coffee, Snacks, Dried Food Products, ...