supervisory signal device

例句：

1. 1. The supervisory signal device is used to monitor the safety of the production process.
   监督信号装置用于监控生产过程的安全性。
2. 2. The supervisory signal device helps to ensure that all employees are aware of their responsibilities and duties.
   监督信号装置有助于确保所有员工都明白自己的责任和职责。
3. 3. The supervisory signal device can be used to alert workers when there is a potential hazard in the workplace.
   监督信号装置可以在工作场所出现潜在危险时提醒工人。