Protect your guns, ammo and other valuables in your safe from the damaging effects of moisture with the Eva-Dry Dehumidifier from Liberty Safe. This 100% renewable, 100% wireless dehumidifier requires no power to operate. Place EVA-DRY in your safe and let the refined silica gel silently absorb the ambient moisture. Once the unit is full with the collected moisture, the indicator window will turn pink. Take the unit out of the safe and fold out the plug on the back of the unit to plug it in any electrical outlet for 8-10 hrs. Unit will renew and dry out the moisture as shown by the indicator turning blue. Average life span is 10 years with a 5-year manufacturer's warranty.