英文關鍵字
automated
blue
board
button
circle
closeup
color
control
controller
device
dial
drive
efficient
electric
electrical
emergency
energy
equipment
feedback
flicker
flickers
inclusion
indicator
industrial
industry
joystick
lamp
lamps
led
light
macro
modern
new
power
pulsating
pulsing
remote
retro
safety
switch
technology
unit
vintage