What do we call an electric cord with plug in one end and a single or multi-port socket at the other end.
Extension Cord
5
A signaling device typically placed near an entry door of a house that alerts the occupant to the presence of the visitor.
Doorbell
5
A device to make an electrical connection especially between an appliance and a power supply, consisting of an insulated casing with metal pins that fit into holes in an outlet.