Designed to handle the high-power consumption demands of todays RVers. Analyzes circuits to identify power supply status. Checks for open ground, open neutral, correct polarity and reversed lines/ground. Features surge protection indicator and thermal sensor to indicate overheating plug/receptacle. Weather resistant with weatherproof cover that fully encloses plug and receptacle. High gauge brass construction. Plugs directly into the power pedestal â no pigtail for cord to plug into. UL & CUL listed Weather resistant Brass Construction | Southwire 30A Portable Surge Guard