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Since sockets of buried electrical outlet or power strip are located deep inside, it is difficult to find insert holes of outlet if you do not watch from the front or top.
Especially if it is dark, or you are in position that hard to see the outlet, it is very difficult to match electrical plug on the outlet precisely. Therefore you have to attempt several times for inserting electrical plug.
Because of this reason, you need easy and comfortable device for plug-in and plug-out that can be used even if you cannot see the outlet properly.
Seoul, South Korea
Ki yoon Han,