结构功能：密封防水平面锁；左右开门通用；有八种锁芯可供选择；

Structure and functions :Air-tight waterproof flat lock, both left and right door opening are OK, there are 8 types of lock cylinder for selection.

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佩尼·亚菲耶尔解释称，由于一部电梯的寿命在25年左右，我们大可以认为，就算大多数电梯的“关门”键都是不起作用的，但“开门”按键是有效的。

Penafiel explains since an elevator's lifespan is around 25 years, it is safe to say that a majority, if any, do not have a functioning 'close' button but the 'open' button works when it is pushed.

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第三天早上10点左右，我回家给来装电话的人开门。

At about 10 A. M. on the third day, I went home to open the apartment for the telephone installer.

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