alarm
alert
area
arrow
attention
background
beware
black
bolt
caution
construction
danger
dangerous
death
electric
electrical
electricity
emergency
energy
exclamation
fire
hazard
high
icon
illustration
industrial
industry
information
isolated
label
lightning
power
protection
radiation
risk
safety
security
set
shock
sign
sticker
stop
symbol
toxic
triangle
voltage
warning
yellow
zone
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