Code point
U+2404
Glyph appearance depends on your fonts.
U+2404
SoU+2404 SYMBOL FOR END OF TRANSMISSION is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Control Pictures block.
Choose the representation you need, then copy its value.
U+2404
9220
␄
␄
E2 90 84
2404
00002404
%E2%90%84
\u2404
\u2404
\u2404
\2404