Alarm bell icon from old computer and terminal character sets, used for alerts, alarms or notifications in legacy computing.
U+1FBF9SEGMENTED DIGIT NINEU+1FBF8SEGMENTED DIGIT EIGHTU+1FBF7SEGMENTED DIGIT SEVENU+1FBF6SEGMENTED DIGIT SIXU+1FBF5SEGMENTED DIGIT FIVEU+1FBF4SEGMENTED DIGIT FOURU+1FBF3SEGMENTED DIGIT THREEU+1FBF2SEGMENTED DIGIT TWOU+1FBF1SEGMENTED DIGIT ONEU+1FBF0SEGMENTED DIGIT ZEROU+1FBEFTOP LEFT JUSTIFIED LOWER RIGHT QUARTER BLACK CIRCLEU+1FBEEBOTTOM RIGHT JUSTIFIED UPPER LEFT QUARTER BLACK CIRCLE250 characters in the Symbols for Legacy Computing Unicode block, from number 250.