alarm signal
Emergency notification tone
An alarm signal is any warning indicator—a sound, light, or other sensory cue—designed to alert people to danger or require attention: The alarm signal blared through the building.
The term applies broadly to emergency systems, biological responses, and animal behavior where one creature warns others of threats.
- warningAlert about danger
- early warningAlert before event occurs
- sirenWailing alert device
- alertWarning or watchfulness
- red alertTop emergency warning state
danger · bell · horn · beacon · emergency · air raid · klaxon · flashing · red · blaring · panic · evacuation · smoke · smoke detector · fire · intruder · security system · scream
- alarmsalert, siren, klaxon, claxon, air raid siren
- signalssign, waved, nodded, gestured, blinked
- fire alarmssmoke detector, heat detector, fire bell, heat sensor, strobe light
- security alarmspanic buttons, motion sensors, motion sensor, door sensor, window sensor
- chemical signalspheromone, pheromones, chemical messengers, sex pheromones, attractant
- Unix SignalsSIGINT