Passive Buzzer Module
  • Passive Buzzer Module

#248: Passive Buzzer Module


An active buzzer will generate a tone using an internal oscillator, so all that is needed is a DC voltage.

A passive buzzer requires an AC signal to make a sound. It is like an electromagnetic speaker, where a changing input signal produces the sound, rather than producing a tone automatically.

To identify them, if you apply a DC voltage to them and it buzzes, it's an active.

PWM on the Arduino can be used to control the pitch and the volume.

Product Details

  • 1 module driven by 9012 triode
  • 2 working voltage of 3.3 V to 5 V
  • 6 sets of fixed bolt hole, convenient installation
  • 7 small board PCB size: 3.3 cm * 1.3 cm
  • 2 module interface specification (3 wire system)
  • 1 VCC external 3.3 V to 5 V voltage (which can be directly connected to 5 V microcontroller and 3.3 V microcontroller)
  • 2 GND external GND
  • 3 I/O external microcontroller IO port


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Passive Buzzer Module

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