Which device is commonly referred to as a "Panic Button"?

A duress alarm is commonly referred to as a "Panic Button" because it serves the specific purpose of alerting security personnel or law enforcement to immediately respond to a situation where an individual feels threatened or is in danger. This device allows a user to signal for help discreetly, without alerting any potential aggressor in the vicinity, making it a critical tool for personal safety in various environments, such as workplaces or public areas.

In contrast, a closed circuit video system is primarily used for surveillance and monitoring, providing visual information rather than alerting authorities. An access control system regulates entry to specific areas but does not inherently provide an emergency alert function. An environmental detection system typically focuses on monitoring conditions such as smoke, fire, or other hazardous situations, rather than directly facilitating personal safety requests.