By pressing the button on the remote control you can change the channel or increase the volume. Can also draw attention to something: Look up, the starry sky! The triangle stands for an entity and for the elements of air and fire.
Learn more about the meaning
Emoji History
Development of the emoji in the Unicode lexicon
First included
The emoji โUpwards buttonโ was approved as part of Unicode 6.0 in 2010 and added to Emoji 0.6 .