Alarmer

Alarmer is a term used to describe an entity—either a person, device, or system—that produces an alarm or alert to indicate a problem, danger, or notable event. The usage spans safety, security, healthcare, software, and communications.

As devices, alarmers include fire alarms, burglar alarms, medical alert devices, industrial safety interlocks, and automotive warning chimes. They typically monitor sensors or inputs and activate audible or visual signals, often with a control panel and power source, and may be connected to a central monitoring system.

In information technology, an alarmer is a component or service in monitoring architectures that detects anomalies or threshold breaches in metrics and sends notifications via channels like email, SMS, or push notifications. They may support escalation rules, acknowledgments, and automatic remediation actions.

In historical contexts, alarmer can refer to people such as town criers or watchmen whose role was to alert communities to danger or announcements.

See also: alarm, alert, notification, monitoring system, safety device.