lockout protection device

例句：

1. 1.The security guard locked the door to prevent intruders from entering.
   保安把门锁上以防止入侵者进入。
2. 2.The child was locked out of the room and had to wait for his parents to come back.
   孩子被锁在房间里，等他的父母回来。
3. 3.The factory uses a lockout protection device to ensure that only authorized personnel can access the machinery.
   工厂使用锁门保护装置以确保只有授权人员可以访问机器。