Multi-functional elevator lobby door key

Abstract

1. The name of the design product: multifunctional elevator hall door key. 2. The use of the design product: for opening the elevator hall door key, also can measure the key size parameters such as the door gap, the threshold distance and the door sleeve verticality of the elevator hall door system. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

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