alarm
alert
background
building
button
checking
connection
control
danger
emergency
equipment
extinguish
extinguisher
fighting
fire
fire extinguisher
fire extinguishers
firefighter
first
hazard
holding
hydrant
industrial
industry
measurement
panel
person
pipeline
precaution
pressure
prevent
prevention
professional
protection
pump
push
red
rescue
safety
security
service
sign
smoke
sprinkler
switch
symbol
system
technology
valve
warning