Active Buzzer Module 3.3-5V

The Active Buzzer Module is widely used for alerting, signaling, and timing applications. It is commonly found in systems where audible feedback is needed — such as alarms, timers, and notification indicators.
With its onboard transistor driver and resistor, the module can be directly controlled from a microcontroller output pin or digital logic signal.

Simply connect the VCC and GND pins to power and apply a digital HIGH signal to activate the buzzer sound.

Features

• Operating voltage: 3.3V – 5V
• Built-in oscillation circuit — no need for PWM or external signal
• Simple interface: only one digital output pin required
• Compact size — easy to integrate into small projects
• Audible sound output: typically between 2–4 kHz tone
• Onboard transistor driver for safe MCU interfacing
• Compatible with Arduino, ESP32, ESP8266, Raspberry Pi, etc.
• Long lifespan and stable performance

• Alarm and security systems
• Timer or event notification devices
• System status indicators
• Smart home projects
• Sound alert in robotics and automation
• Educational electronics projects