What is the best way to prevent corrosion on my MS-WR600 remotes chrome finish ?

Care and Maintenance  MS-WR600 remote

As with all products with a chrome finish exposed to the harsh Marine environment, a little care will help to preserve the finish and prevent corrosion. Fusion recommends that you clean any salt water and/or salt residue from the remote with a damp cloth soaked in fresh water. Always fit the protective cover when not in use.