Power surge protection is a cheap insurance for the RV in the long run. Although power surges are not very common nowadays, but when it happens, I know my electronic equipment's are protected. I opted for Progressive Industries EMS-HW30C hardwire unit with remote display, as pictured below. It is also available as a portable unit. The EMS-HW30C is a power protection all in one unit, it has a built in voltage protection, a time delay for the AC compressor, a 3 mode surge protection, reverse polarity protection, open neutral protection, open ground protection, AC frequency protection, and accidental 220 volt protection...Amazon link to PE EMS-HW30C.
