Would suggest removing all electronics and keeping them in a climate controlled space (under your
bed for example). Most units un-plug so this is not a high tech
project. Besides protecting them from the freezing and thawing of
condensation inside the unit (on the circuit boards) this is the ultimate theft deterent
project you can implement. Of course if you were truly concerned about your boats well being You would take it somewhere warm ,chuckle, chuckle. Currently in herb river ga and south bound.