hand switch box

例句：

1. 1. The hand switch box is located on the wall behind the door.
   手开关盒位于门后墙上。
2. 2. The engineer replaced the old switch box with a new one.
   工程师用一个新的替换了旧的开关盒。
3. 3. The technician checked the function of the hand switch box before starting work.
   技术员在开始工作前检查了手开关盒的功能。