This black 15A socket outlet is used mainly for stage lighting dimmer outlets in the UK including the Robolights Smartsocket system. The socket conforms to British Standard (BS)546 and is a compatible replacement for most types of round 15A sockets. This 15A / 230V AC socket is moulded in heat resistant thermosetting material and has safety shutters to cover the live and neutral terminals when not in use. Designed to accept 15A round 3-Pin plugs it conform fully to British standard (BS)546 and is a fully compatible replacement for earlier versions.