An Emergency Position Indicating Radio Beacon (EPIRB) is a safety device used primarily in maritime and aviation settings. It transmits a distress signal via satellite to alert search and rescue services when activated. EPIRBs are designed to operate in harsh conditions and can be automatically activated when submerged in water. These beacons operate on specific frequencies, typically 406 MHz, and can provide location information to rescuers. They are essential for ensuring safety at sea and are often required on commercial vessels. EPIRBs are part of the broader category of emergency signaling devices, which also includes Personal Locator Beacons (PLBs) and Emergency Locator Transmitters (ELTs).