Symbol 5954 from IEC 60417 - Title/Meaning: Colour temperature, fluorescent lamp Function/description: To identify the control or the indicator for correlated colour temperature of fluorescent lighting indoors.
Additional information: 
This symbol may be used in conjunction with symbols 5552, 5553, 5955 and 5956
Published in: 3C/1102/FDIS
Own work using: iso.org/obp/graphics/grs/70cd0c65-e44d-427b-8a04-e0a1bafc496c 200.png
Vectorization:  Mrmw