alarm
alert
apartment
background
bell
box
break
building
button
center
crisis
danger
detector
electronic
emergency
equipment
escape
evacuation
fire
flame
help
here
home
industry
mall
metal
mounted
notify
office
panel
prevention
protection
push
red
rescue
safe
safety
security
service
shop
sign
siren
sound
symbol
system
urgency
wall
warning
white