Protect your valuables against rust and corrosion by utilizing this SnapSafe® Canister Dehumidifier. When the cap indicator turns pink from moisture, the canister is ready to be recharged. To recharge: place unit in the oven at 325ºF for two hours. Unlimited recharges allows for a lifetime of use. Product Features - Prevents moisture that can cause rust and mildew in isolated areas like gun safes, cabinets and closets. - Indicator system with built in signal to inform user when unit needs rechar