900 Gram 2 Pack Dehumidifiers for Home, Rechargeable Gun Safe Dehumidifier, Gun Safe Accessories 2 LBS Dehumidifier for Basement, Closet, Garage, Safe, Car, Moisture Absorbers Desiccants

【Indicating Silica Gel Beads】: cobalt chloride-free orange indicating beads (2-4mm in size) are designed to change color within a humidity range of 20%-50%. Once saturated with moisture, the beads will complete the color change to green. It's important to note that the initial color change does not indicate full saturation. The beads will continue to absorb moisture until reaching 50%RH. We recommend periodically checking the silica gel beads to ensure their effectiveness. 【See-Through Plastic Disk, Transparent Window】: desiccant canister features a clear window that allows you to check the color of the beads without opening the container. If the beads change from orange to green, it indicates that the environmental relative humidity is above 50%. With an effective volume of 675 cubic feet, it provides efficient moisture absorption. 【Easy Reactivation】: To reactivate the reusable silica gel canister desiccant dehumidifier, simply place it in the oven at a temperature of 200°F-250°F for 0.5-3 hours (avoid exceeding 250°F). Depending on the condition of the silica gel beads, reactivation may take less time than the recommended duration. Remember to regularly check the color of the silica gel beads.