电报上要说的是她因故延迟。
一个人从出口出去，此设备提供15到30秒的延迟。而且它有内置95分贝的双重压电报警器，它可在某人试图离开时报警。
It provides 15 to 30 seconds of delay before a person can exit the door, and it has a built-in 95-decibel dual piezo alarm that alerts authorities when someone is trying to leave.
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