Symbol 5109 from IEC 60417 - Title/Meaning: Not to be used in residential areas Function/description: To identify electrical equipment which is not suitable for a residential area (e.g. equipment which produces radio interference when in operation).
Additional information: 
Published in: Supplement H, 1987
Own work using: iso.org/obp/graphics/grs/bbc04de8-34bd-4a91-86a1-67084d31415b 200.png
Vectorization:  Mrmw