What is the name of the safety mechanism that alerts staff?

The appropriate term for a safety mechanism that alerts staff is typically referred to as an alarm system. An alarm system is designed to notify personnel of specific issues, such as safety breaches, environmental hazards, or other emergencies requiring immediate attention. It can encompass various elements like sound alarms, visual signals, and other notifications that prompt action from staff members.

Emergency buttons, on the other hand, are usually specific devices that can be activated by individuals in a crisis situation to directly signal for help or initiate a specific emergency response. While these are critical for quick alerts, they are not broadly defined like an alarm system.

Blower alarms refer to specific alerts associated with the function of ventilation systems and are not generalized alert systems used across various safety contexts.

Safety signal, while it implies a communication method regarding safety, does not encompass the full range of alerts and notifications that an alarm system would include.

In summary, the term "alarm system" effectively encapsulates the various signals and notifications put in place to ensure staff awareness regarding safety concerns.