ACE 3485 5V Passive 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. Passive buzzer, also known as magnetic transducer, can make different tones but the devices that controls the buzzer has to provide it with an oscillating electronic signal (AC) at a desired frequency. The supplied frequency will determine the tone. Supplying just a fixed voltage will generate no sound, except perhaps a slight “tick” at the point when the power source is connected or disconnected from the buzzer. Compared to the active buzzer, is the slightly shorter one with the electronics exposed on the bottom.