Funny 1
Quickly plug and unplug twice to switch the suction light mode
Plug and unplug twice to switch to the always-on mode
Plug and unplug twice to switch to no-light mode
Funny 2
Quickly plug and unplug three times, berserk mode/normal mode
Two lights on, 9.5W berserk mode
One light is on, 7W normal mode