PPE
alert
area
audible
background
caution
damage
danger
deaf
ear
earmuffs
earplugs
equipment
hazard
hazardous
head
headphones
health
hear
high
icon
industrial
label
levels
listen
loud
medical
muffs
noise
notice
place
plug
protection
protective
required
risk
safety
security
sign
silence
sound
speaker
sticker
symbol
volume
warning
wear
work
zone