This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. U+23F2 offers a line break opportunity at its position, except in some numeric contexts.
The CLDR project calls this character “timer clock” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: clock, timer.
This character is designated as an emoji. It will be rendered as monochrome character on conforming platforms. To enable colorful emoji display, you can combine it with Variation Selector-16: ⏲️ See the Emojipedia for more details on this character’s emoji properties.
The Wikipedia has the following information about this codepoint:
A timer or countdown timer is a type of clock that starts from a specified time duration and stops upon reaching 00:00. A simple timer is an hourglass. Commonly, a timer triggers an alarm when it ends. A timer can be implemented through hardware or software.
Stopwatches operate in the opposite direction, upwards from 00:00, measuring elapsed time since a given time instant.
Time switches are timers that control an electric switch.
Representations
System
Representation (click value to copy)
Nº
9202
UTF-8
E2 8F B2
UTF-16
23 F2
UTF-32
00 00 23 F2
URL-Quoted
%E2%8F%B2
HTML hex reference
⏲
Wrong windows-1252 Mojibake
â²
Encoding: GB18030 (hex bytes)
81 37 81 36
RFC 5137
\u'23F2'
Bash and Zsh inside echo -e
\u23F2
C and C++
\u23F2
C#
\u23F2
CSS
\0023F2
Excel
=UNICHAR(9202)
Go
\u23F2
JavaScript
\u23F2
Modern JavaScript since ES6
\u{23f2}
JSON
\u23F2
Java
\u23F2
Lua
\u{23F2}
Matlab
char(9202)
Perl
"\x{23F2}"
PHP
\u{23f2}
PostgreSQL
U&'\23F2'
PowerShell
`u{23F2}
Python
\u23F2
Ruby
\u{23f2}
Rust
\u{23f2}
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