0:03
Please enable Javscript
Turn backlight on, flicker, and turn off
0:08
Please enable Javscript
Vacuum, long, modern switch-off
0:01
Please enable Javscript
single switch on or off
0:01
Please enable Javscript
Flip on switch.
0:03
Please enable Javscript
four different kinds on switch on or off
0:03
Please enable Javscript
four different kinds on switch on or off