Limited to indoor use of electrical appliances, as the name suggests, is limited to indoor use of electrical appliances, mainly in view of the rain, frost triggered by electrical short-circuit and other factors, can only be limited to indoor use, such as ordinary plugs (sockets), plugs, chargers and other electrical appliances, usually in the labeling of the product there is a small house like the icon, as shown in the figure:
Limited to the indoor use of electrical appliances only used indoors!