Symbol 5034 from IEC 60417 - Title/Meaning: Input Function/description: To identify an input terminal when it is necessary to distinguish between inputs and outputs.
Additional information: 
See also ISO 7000-0794
Note was added for the new release IEC 60417-5034 (2014-06-21) and replaced IEC 60417-5034 (2002-10-07)
Published in: First edition, 1973
Own work using: iso.org/obp/graphics/grs/b586ad15-5f02-4dab-b134-044c05a28664 200.png
Vectorization:  Mrmw