Symbol 5014 from IEC 60417 - Title/Meaning: Horn, electrical / electromechanical Function/description: To identify switches which operate horns, e.g. factory horns, acoustic alarm signals.
Additional information: 
The title was changed on 2014-06-14 as follows.;This new release ;IEC 60417-5014 (2014-06-14): Horn, electrical / electromechanical;replaced;IEC 60417-5014 (2002-10-07): Horn
Published in: First edition, 1973
Own work using: iso.org/obp/graphics/grs/ba479180-ab06-4d92-b6bc-6b702fcf8526 200.png
Vectorization:  Mrmw