Correct.
The buzzer is an integrated structure of electronic signals, using DC voltage power supply, widely used in computers, printers, photocopiers, alarms, electronic toys, automotive electronics, telephones, timers, and other electronic products as a sound device. Buzzer is mainly divided into piezoelectric buzzer and electromagnetic buzzer two types.
Buzzer (English Buzzer) is a kind of integrated structure of the electronic buzzer, belongs to a kind of electronic components, the use of DC voltage or AC voltage power supply, widely used in the following areas:
Computer industry (motherboard buzzer, chassis buzzer, computer buzzer) printers (control board buzzer), photocopiers, alarm industry (alarm buzzer, alarm buzzer), electronic toys, electronic equipment and other electronic products as a sound device. buzzer), electronic toys (musical buzzer), agriculture, automotive electronics industry, telephone (environmental buzzer), timer, air conditioning, medical equipment and other electro-acoustic industry, environmental monitoring.
Expanded Information:
Buzzer can't be used as ore radio. Because, the buzzer has an internal oscillating circuit that drives a miniature horn inside to beep when power is applied. The buzzer is not a mere little horn. Also, there are two types of buzzers. One is, the one with its own internal oscillator;