英文關鍵字
alarm
alarms
alert
and
angle
background
burn
ceiling
close
color
danger
detection
detector
detectors
domestic
emergency
equipment
fire
flame
heavy
home
house
household
interior
lighting
low
object
people
plastic
professional
protect
protection
real
safety
security
sensor
signal
smoke
sound
system
technology
testing
time
triggered
warning
white