Which of the following best defines a Multiple Station Alarm Device?

• A. Two or more single-station alarm devices that can be interconnected so that actuation of one causes all audible alarms to operate
• B. A manual fire alarm box only
• C. A single-station alarm device with connections to other detectors
• D. An alarm device that only sounds locally

Answer: (A)

A Multiple Station Alarm Device is defined as two or more single-station alarm devices that can be interconnected so that actuation of one causes all audible alarms to operate. This arrangement lets a single trigger in one area cause every connected alarm to sound, spreading the warning throughout the space even though each device remains a separate, independently powered unit. It’s about coordinating independent alarms to act as a group, not about manual initiation or sensors triggering other sensors. A manual fire alarm box is only a manual initiator, not a network of interconnected alarms. A single-station device connected to detectors isn’t the same as interconnecting multiple audible alarms. And an alarm that sounds only locally doesn’t provide the building-wide audible warning that defines a MSAD.