To provide an electronic apparatus cover and an electronic apparatus assembly which are mounted on a structure of a building, where the electronic apparatus cover and the electronic apparatus assembly are easily recognized even from a distance, and have light emitting parts for illuminating at a wide viewing angle easily.

An outlet assembly 11 has an outlet 11a arranged inside a wall 12, and a cover 13 covering a hole 12a formed in the wall 12. The outlet 11a is supported by the cover 13. A light emitter 16 formed of organic EL elements is placed on the surface side of the cover 13. The cover 13 has a sensor 15. The sensor 15 is made so as to be able to detect both ambient luminosity and personal presence, and lights the light emitter 16 when it is dark in an ambience and the personal presence is detected.