International plug surge protectors

Universal socket

— the presence of the filter at least one universal socket, compatible with several types of plugs; however, in such models, other outlets are usually not provided at all.

The most popular universal socket option is compatible with three types of plugs: conventional Euro sockets (see the relevant paragraph), American Type A plugs (two parallel blades), and Type I plugs used in China and Australia (three flat blades at an angle). Such versatility can come in handy if the household has devices with different types of plugs — for example, “chargers” bought abroad and not compatible with conventional Euro sockets.