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We must unplug all electronic device when we are not in use.
After using the electricity, we dont unplug so invisible electricity is being wasted.
You can use the timer on the Save Wheel.
Save Wheelcan be plugged into the code on both sides.
User can purschase a peice as needed. It is much more economical.
chung-ang university
Seoul, South Korea
chung-ang university
Seoul, South Korea