Which signal from a system is connected to the master alarm panels to indicate a problem with the source equipment?

• A. local alarm
• B. area alarm
• C. pressure switch
• D. anesthetizing

Answer: (A)

The central master alarm panels rely on the device’s own warning signal—the local alarm. When a piece of source equipment detects a fault or unsafe condition, it triggers its local alarm. That alarm output is what travels to the master panel so staff can see exactly which device is having trouble and respond quickly. Area alarms are broader and don’t pinpoint a single device, while a pressure switch is a sensor that may trigger an alarm on the device itself rather than serving as the direct signal fed to the master panel. Anesthetizing isn’t a type of alarm signal. So, the signal connected to the master alarm panels to indicate a problem with the source equipment is the local alarm.