The Active Buzzer Module is a straightforward audio solution for projects needing a consistent audible signal. Featuring a piezo buzzer with an integrated oscillator, it produces a fixed tone—typically around 2.5kHz—when powered at 3-5V, making it ideal for alerts or confirmations. Unlike passive buzzers, this active model requires only a steady DC high signal from a microcontroller like Arduino to buzz, simplifying control without the need for complex waveforms.

Mounted on a small PCB (often around 22mm x 12mm), the module uses a three-pin interface: signal (S), power (VCC), and ground (GND). It draws a modest current, typically under 25mA, and is housed in durable plastic for reliable operation. Perfect for beginners or applications where a single tone suffices, it can be enhanced with a transistor for louder output if driven directly from an MCU pin risks overload (e.g., above 20mA). From alarms to user feedback, this module offers a plug-and-play audio device in a tiny package.

Key Features:

• Fixed 2.5kHz tone with built-in oscillator
• Activates with a simple 3-5V high signal
• Compact piezo buzzer on PCB
• Three-pin design for easy integration
• Low-power operation for efficiency
• Durable, lightweight build
• Ideal for basic audio alerts

Technical Specifications:

• Voltage Range: 3V–5V DC
• Input Voltage: 3.3V–5V (signal via microcontroller)
• Current Consumption: Less than 25mA (typical)
• Interface: 3-pin (signal, VCC, GND)
• Dimensions: Approx. 22mm x 12mm (PCB size)
• Operating Temperature: -20°C to +60°C

Applications:

• Alarm signals in Arduino projects
• User input feedback in DIY devices
• Warning tones in electronic prototypes
• Notification sounds in home automation
• Simple beeps in educational kits