Active Buzzer Module

An active buzzer module is an electronic sound-producing device that contains a built-in oscillator circuit. When you apply a DC voltage (typically 3.3V–5V), it automatically generates a fixed-tone sound without needing an external frequency signal.

Applications

• Security alarms
• Doorbells
• Warning systems
• Timer alerts
• Electronic project notifications and status indicators

  
  

  
  

  
  

  Pin Configuration

  Most active buzzer modules have:

  • VCC – Power supply (+5V or +3.3V)
  • GND – Ground
  • SIG (Signal) – Control pin