alarm

alert

animation

apartment

app

carbon

cartoon

caution

control

danger

detector

device

disaster

electronic

emergency

environment

evacuation

exterior

fighting

fire

home

house

household

icon

illustration

light

loud

monoxide

motion

noise

object

office

plastic

prevention

preventive

protection

round

safety

security

sensor

sign

signal

siren

smart

smoke

sound

system

technology

volume

warn

white