Symbol 5553 from IEC 60417 - Title/Meaning: Colour temperature, incandescent lamp Function/description: [To identify the control or the indicator for correlated colour temperature of incandescent lighting indoors. This symbol may be used in conjunction with symbols 5552, 5954, 5955 and 5956.]
Additional information: 
The description was changed in IEC 60417-5553 (2003-11-21) from ""To identify the control and the indicator ..."". to ""To identify the control or the indicator ..."" ;To be in line with IEC80417-1 Ed.2, Note in IEC 60417-5553 (2003-11) was move to the second paragraph of description
Published in: Supplement M, 1994;2002-10-07;3C/1101/FDIS
Own work using: iso.org/obp/graphics/grs/260c3ddd-6333-4285-8470-798cf20477d0 200.png
Vectorization:  Mrmw