Code point
U+21CD
Glyph appearance depends on your fonts.
U+21CD
So21D0 0338U+21CD LEFTWARDS DOUBLE ARROW WITH STROKE is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Arrows block.
Choose the representation you need, then copy its value.
U+21CD
8653
⇍
⇍
⇍
E2 87 8D
21CD
000021CD
%E2%87%8D
\u21CD
\u21CD
\u21CD
\21CD