SnapSafe 500 cu. ft. Large Rechargeable Safe Dehumidifier 110-Volt White

Absorb humidity and prevent rust or mildew in gun safes, closets, pantries and other enclosed areas. Moisture-control crystals change from orange to green, indicating when the unit needs recharging. Dry out and recharge the crystals by plugging into 110-Volt electrical outlet until crystals turn orange again.