Symbol 5604 from IEC 60417 - Title/Meaning: Curtains Function/description: To identify the control for marking the power (wattage) setting or the operating condition for the curtains category.
Additional information: 
This symbol is intended to be used in conjunction with one or more of the symbols 5600, 5601, 5602 and 5603
Published in: Supplement N, 1995,3C(Central Office)191
Own work using: iso.org/obp/graphics/grs/6711d1b3-ebf3-440e-a047-e95c992364c0 200.png
Vectorization:  Mrmw