ELI5: Explain Like I'm 5

Emergency locator beacon

An emergency locator beacon is like a special button or device that sends out a special signal when you're lost or in trouble. It's kind of like calling for help. The signal is sent out to satellites way up in space, and then the satellites send the signal down to people on the ground who can help find you. So, if you're out in the wilderness and you get hurt or lost, you can push the button on the beacon to ask for help. It's like having someone come to rescue you.