Covers for electric outlets; Electric cables; Electric cords for use with recreational vehicles (RVs), marine vehicles, automobiles, and campers being RVs; Electrical connectors; Electrical plugs and sockets; Electrical resistance heating wires and electrical controllers therefor; Extension cords for use with recreational vehicles (RVs), marine vehicles, automobiles, and campers being RVs; Gas testing instruments; Power adapters for use with recreational vehicles (RVs), marine vehicles, autom...