Sirui Electronics moistureproof box SLR camera dryer camera comparison, easy to use?

Moistureproof box, drying box, dryer, in fact, the effect should not be too bad, the control of electricity work is more accurate, and the specified goal can be achieved. The dryer uses silica gel to reduce humidity to achieve a dry environment, and it can work without power supply, which is more convenient, depending on personal preference.