As character names:

U+27FA LONG LEFT RIGHT DOUBLE ARROW 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 159, hex 0x9F, octal \237, binary 10011111
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 186, hex 0xBA, octal \272, binary 10111010
This is continuation byte 2, expecting 0 more.

U+27FA	LONG LEFT RIGHT DOUBLE ARROW
	x (left right double arrow - 21D4)