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We often use plug in our daily life. but if we don't pull it out on time ,it may cause some leakage accidents. But because of some reasons such as that the line is too long or the plug is not so convenient, people are inconvenient or difficult to pull it out. This plug will be able to solve this problem effectively. It has a switch that can control the interface. When you press the switch, plug two metal ends on the interface will automatically shrink and fully insulate with the circuit and avoid the risk of electric shock.
Huazhong University of Science and Technology