As character names:

U+2900 RIGHTWARDS TWO-HEADED ARROW WITH VERTICAL STROKE character (⤀)

As raw characters:

⤀

As a string of HTML entities:

⤀

Decoder output:

Byte number 1 is decimal 226, hex 0xE2, octal \342, binary 11100010
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 164, hex 0xA4, octal \244, binary 10100100
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 128, hex 0x80, octal \200, binary 10000000
This is continuation byte 2, expecting 0 more.

U+2900	RIGHTWARDS TWO-HEADED ARROW WITH VERTICAL STROKE
	= z notation partial surjection
	x (leftwards two-headed arrow with vertical stroke - 2B34)