rbscebu
Girls call me Makaluod
I live on a small tropical island in the Philippines (Mactan Island). At the suggestion of @Tomo I purchased a dry box in which to store my SR's. A dry box is often used to store camera gear in a relatively dry environment. The dry box that I chose for my SR's is an Andbon AD-30S of 30 litre capacity with automatic electronic controls. You can set the desired relative humidity for inside the box from 60% to 25% +/- 2% and it consumes 0.4W of power so should not break the bank with power bills at about 15 cents per month.
The dry box is manufactured by Zhuhai Andbon Technology Co., Ltd. Their web site can be found at https://www.andbon.en.alibaba.com. My Andbon 30 litre dry box holds my five M7DS's plus 11 other SR's in their timber cases. I store them at 35% relative humidity. This dry box was bought from a discount camera house in Manaila. Normal cost is about USD 80 (plus USD 10 delivery from Manila).
I am very impressed with the quality of construction of this dry box, particularly for the price.
The dry box is manufactured by Zhuhai Andbon Technology Co., Ltd. Their web site can be found at https://www.andbon.en.alibaba.com. My Andbon 30 litre dry box holds my five M7DS's plus 11 other SR's in their timber cases. I store them at 35% relative humidity. This dry box was bought from a discount camera house in Manaila. Normal cost is about USD 80 (plus USD 10 delivery from Manila).
I am very impressed with the quality of construction of this dry box, particularly for the price.