I would like to learn more about this "Humidity Switch" which is located on the inside of the freezer door. You will not be able to see this switch till you open the freezer door and look on top. I know if I keep this switch on and do not have the camper plug in, it will run the battery down. I know it helps when the humidity is high. I would like to get some comments on your thoughts concerning your experience with this switch. Any suggestions?