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Designed to solve problems common to each person's to go out, often forgets the portable key. Today, people increasingly favor DIY (do it yourself) activities for two main reasons: first, hands-on experience is enjoyable; second, in night, when we go home, often difficultly to solve chooses the suitable open door key immediately. This new design can solve and improve the existing tradition of life problems, according to, different doors and select each different entrance key, select the keys from the key box and turn the Turn off case to take out the keys.. The characteristic in creative chooses key: acrylic fabric、battery、switch、led.
National Cheng Kung University