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Keyestudio Passive Buzzer Alarm Module for Arduino

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We can use Arduino to make many interactive works of which the most commonly used is acoustic-optic display.
The circuit in this experiment can produce sound. Normally, the experiment is done with a buzzer or a speaker while buzzer is simpler and easier to use.
The buzzer we introduced here is a passive buzzer. It cannot be actuated by itself, but by external pulse frequencies. Different frequencies produce different sounds.We can use Arduino to code the melody of a song, which is quite fun and simple.
  • Working voltage: 3.3-5v

  • Interface type: digital

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