HKD Electronic Buzzer Module - 5V 3-Pin Active Buzzer Breakout-Compact,Easy

The HKD Electronic Buzzer Breakout Board is a compact and easy-to-use active buzzer module designed for embedded systems, such as Arduino or microcontroller-based projects. Featuring a 3-pin interface and 5V operating voltage, this buzzer module provides an audible alert with minimal control complexity.

This module uses an active buzzer, which means it contains a built-in oscillator or shock source, allowing it to produce sound as soon as power is supplied-no need for an external frequency signal. Unlike passive buzzers, which require a square wave signal to function, the active buzzer simplifies integration, especially for beginners and rapid prototyping.

Key Features

• Active buzzer design - sounds when powered; no external tone signal required
• 9012 transistor drive - provides reliable on-board signal amplification
• Operating voltage - supports both 3.3V and 5V systems
• Simple 3-pin interface:
  VCC: Connects to 3.3-5V power supply
  GND: Ground connection
  I/O: Connects to microcontroller digital output pin
• PCB dimensions: 3.3cm × 1.3cm
• Mounting hole included - easy to secure on project enclosures or boards

Advantages of Active vs. Passive Buzzer

• Active buzzer has an internal vibration source and requires only power to operate
• Easier programming-toggle on/off with simple high/low signals
• Does not require a square wave signal, unlike passive buzzers

Typical Applications

• Alarm systems
• Smart car projects
• Sound notifications in automation
• Microcontroller-based indicators

This module is ideal for educational purposes, hobbyist projects, and product prototyping where an easy-to-use, reliable sound indicator is needed.

What's in the box
1 x HKD Electronic Buzzer Module - 5V 3-Pin Active Buzzer Breakout