ACE 3484 5V Active Buzzer

A buzzer or beeper is an audio signaling device that generates sound in a frequency range of 1 to 7 kHz as an audio indication. This type of buzzer has a built-in oscillating source and requires an external DC voltage to make it sound. This buzzer can only make one type of sound (tone). Compared to the passive buzzer, it is the slightly taller one, with a solid, plastic coat on the bottom and a label that says “remove seal after washing”.