英文關鍵字
appliance
background
battery
black
blink
button
charge
closeup
code
connect
connection
control
dark
dashboard
detail
device
electric
electronic
energy
equipment
flash
flicker
gray
illumination
indicator
industry
internet
isolated
lamp
led
light
macro
object
panel
plastic
power
red
safety
sign
signal
stats
status
sun
switch
switchlight
system
technology
telecommunications
trigger
view