Europlug

Example of a Europlug
An unofficial double "Eurosocket". While these are not defined by any standard, they are nevertheless produced and sold by some companies. Since they will also accept Swiss Type 11 plugs due to the nearly identical form factor, they should be rated for at least 10 A to allow safe usage (this one is rated for 16 A).

The Europlug, also known as Type C by the IEC, is a flat, non-rewirable two-pole, round-pin domestic AC power plug, rated for voltages up to 250 V and currents up to 2.5 A. It is a compromise design for low-power Class II appliances. It is defined by the CEE 7 standard under the official designation CEE 7/16 Alternative II. The standard requires Europlugs to be non-rewirable (plugs cannot be opened to change the wiring) and permanently attached to a power cord or appliance; anything else is non-compliant.

The Europlug is the most widely used plug internationally. The standard does not define a specific socket outlet; it is compatible with all round-pin domestic power socket used across Europe with the exception of the 16 A CEI 23-50 socket found in Italy. The plug is also used as standard in countries including Indonesia, Russia and most post-Soviet states, DR Congo, Egypt, Iran and Turkey.

The plug is often used on the housing of small plug-in power supplies. Though standardization excludes it, there are cable couplings for Europlugs and rewireable plugs available.