Code point
U+23EE
Glyph appearance depends on your fonts.
U+23EE
SoU+23EE BLACK LEFT-POINTING DOUBLE TRIANGLE WITH VERTICAL BAR is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Miscellaneous Technical block.
Choose the representation you need, then copy its value.
U+23EE
9198
⏮
⏮
E2 8F AE
23EE
000023EE
%E2%8F%AE
\u23EE
\u23EE
\u23EE
\23EE