Symbol 1938 from ISO 7000 - Title/Meaning: Remote station, stand-by 
Function/description: To identify the display panel indicator which signifies that the remote station is in a stand-by condition.
Own work using: iso.org/obp/graphics/grs/f047e9e4-bb87-4deb-a8d1-ddec4733877e 200.png
Vectorization:  Mrmw