KY-012 Active Buzzer Alarm Sensor Module 5V - (AD47068)

Description:

Active buzzers, sometimes called sounders, are devices that generate a sound of a specific and fixed frequency when connected to voltage. An active buzzer incorporates a simple oscillator, so it is only necessary to supply current to the device for it to emit sound. In contrast, passive buzzers need to receive a frequency wave. By internally incorporating the necessary electronics to make the speaker vibrate, an active buzzer is very easy to connect and control. Furthermore, they do not burden the processor as it does not have to generate the electrical wave that will become sound. On the other hand, they have the disadvantage that we cannot vary the tone of the emitted sound, so we cannot create melodies, which we can do with passive buzzers.

The 5-volt active buzzer device produces a single-tone sound when the signal is high. To produce different tones, use the passive buzzer.

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