We purchased a protector when we bought our new camper last September. When talking to the dealer about the necessity of the protector, he put it this way ... which sold me on one.
With today's sophisticated electronics that's built into your camper, the cost of replacing only 1 item in the camper in the event of a power surge or reduction will probably cost more than the protector. Do I really want to have the electronics in my camper damaged and then have to pay the price to fix-replace them? The cost of a new television was more than the protector?
It took all 3 and 1/2 seconds to see the logic. We purchased the protector same day, and it's been plugged in ever since! (even at home).
Think about it? Then you decide!