transponder

IPA: trænspˈɑndɝ

A radar or radio transceiver that transmits some signal in response to receiving a predetermined signal.

Examples of "transponder" in Sentences

The airplane's transponder sent out a unique signal to help air traffic control track its location
In RFID technology, each tag has a transponder that communicates with a reader to transmit data
The satellite equipped with a powerful transponder facilitated global communications across remote areas
After the car accident, the transponder detected a malfunction and alerted emergency services immediately
The marine vessel's transponder emitted its position to avoid collisions with other ships in busy waters