emergency signaling
Crisis alert transmission
Emergency signaling is communication intended to summon help in a crisis.
The term covers everything from flares and distress flags to radio mayday calls and satellite beacons.
The hikers carried a whistle and mirror for emergency signaling.
Modern devices include personal locator beacons that transmit GPS coordinates to rescue services.
- whistleShrill air-blown sounder
- morse codeDot-dash alphabet system
- sirenWailing alert device
- flareSudden bright burst
- strobeRapidly pulsing light
strobe light · beacon · rescue beacon · distress signal · distress call · mirror · signal fire · alarm · air horn · flash · radio transmitter · smoke signal · satellite phone · search and rescue operations · flag · coast guard · megaphone · warning signal
- fire safetyfire alarms, fire drill, fire extinguishers, smoke detectors, fire drills
- first aidbandage, bandages, first aid kit, tourniquet, gauze pads
- water safetylifeguards, CPR, rescue tube, life jacket, drowning prevention
communication context
emergency signalingstandard procedure