英文關鍵字
alarm
background
battery
black
button
closeup
condition
connect
connection
control
data
detail
detector
electric
electronic
energy
equipment
flash
flashlight
flicker
gray
illuminate
illumination
indicator
industry
initiate
isolated
lamp
lantern
led
light
macro
panel
plastic
power
red
safety
selective
sign
signal
single
stats
status
sun
system
technology
triggered
video
wink
wireless