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Business & finance
Glyph
Business & finance Vol 12
speaker, News, Attention
Black
512x512
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Signs & symbols
Buttons
Alert, reminder, notification
Teal
support, help, Alert
UI
Very Basic. Android L (Lollipop)
problem, Attention, warning
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Files & folders
AwesomeFolders
Folder, Check, exclamation
Network & communications
Communication & Technology
wave, Attention, Error
Computer & hardware
3D Maker Vol 1
sign, Attention, warning
Goldenrod
Cog, Attention, warning
Crimson
Freecns Cumulus
warning, Error, Attention
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48x48 Free Time Icons
warning, Alert, Hand
Red
48x48
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24x24 Free Application Icons
Attack, Error, Alert
DarkSlateGray
24x24
Free Mobile Icon Kit
Attention, Message
64x64
Desktop apps
16x16 Free Toolbar Icons
nell, Alert, time
LightCyan
16x16
problem, warn, danger
Gold
Wireframe mono icons
Attention