In your neighborhood grocery store, near the Ziplock bags and the saran wrap, there is a product that is made to cover food containers. They look like minature shower caps with the elastic around the bottom. if you manage to find the right size, they fit perfectly over the control box of your Ace 250. The elastic pulls it in tight underneath and provides a very effective, temporary weather barrier. they are clear plastic so the controls are easy to see through it. I discovered them by accident last winter and I intend to keep a couple in my Detecting kit at all times from now on. You never know whan a sudden shower might crop up.
MrGee
MrGee