GEARGO
A surge protector sits between the campground power post and your RV and is meant to guard the RV's wiring and appliances from power problems at the site. If you never plug into shore power (for example you run only on batteries or a generator), you may not need one.
RV and trailer owners who plug into campground power.
It names a warranty of 5-year. Check the listing for the terms.
GEARGO ๐ต๐๐๐๐๐-๐ฎ๐๐ RV Surge Protector 30 Amp, 15000J Circuit Analyzer with IP68 Waterproof Cover, High-Energy Protection & Temperature Control, RV Adapter Plug for Camper, Travel Trailers (ASIN B0GLG75XBY). Amazon's page has the current price, specs and reviews.
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Check current Amazon listing (ASIN B0GLG75XBY).
Fine print: The Dude has not personally tested this product. The details on this page come from the Amazon listing and can change; check the listing for the current specs, price and availability.