As character names:

U+2350 APL FUNCTIONAL SYMBOL QUAD UPWARDS 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 141, hex 0x8D, octal \215, binary 10001101
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 144, hex 0x90, octal \220, binary 10010000
This is continuation byte 2, expecting 0 more.

U+2350	APL FUNCTIONAL SYMBOL QUAD UPWARDS ARROW