The Surge Guard 30A provides total electrical protection from faulty park power and electrical issues inside the RV. It provides protection against power surges, open ground, open neutral, Low (<102V) and High (>132V) voltage, overheating plug/receptacle, reverse polarity, miswired pedestal, and elevated ground. The unit continuously monitors for and displays voltage and Amp draw (RMS). It includes an anti-theft lock ring on the cord, multi-mode surge protection, commercial-grade brass receptacle, and an automatic reset on power restoration.