5V Active Buzzer Module – Sound Alarm Module for Arduino and Embedded Projects The 5V Active Buzzer Module is a compact and easy-to-use sound-generating device designed for use in embedded systems, DIY electronics, and Arduino projects. Unlike a passive buzzer, this active buzzer includes an internal oscillating circuit, allowing it to produce a continuous tone when powered – no need for PWM or external frequency generation. Simply apply 5V DC to the module, and it emits a clear audible tone, ideal for alarms, timers, notifications, and alert systems in electronics projects. It features a standard 3-pin interface (VCC, GND, Signal), making it compatible with Arduino, ESP32, STM32, and other microcontrollers. Key Features Built-in oscillation circuit (no external frequency required) Easy to use: produces sound when 5V is applied Ideal for sound alerts, alarms, and indicators Standard 3-pin interface (VCC, GND, Signal) Compact and breadboard-friendly design Compatible with Arduino, ESP8266, ESP32, STM32, Raspberry Pi, etc. Product Specifications Feature Specification Buzzer Type Active (self-driving) Operating Voltage 5V DC Operating Current ≤ 30mA Sound Output ~85dB at 10cm Frequency Fixed tone (~2.5kHz) Interface VCC, GND, Signal (Digital HIGH to trigger) Mounting Style PCB module / Breadboard compatible Dimensions ~22mm x 15mm (may vary by module) Compatible Platforms Arduino, ESP32, Raspberry Pi, etc. Applications Alarm and warning systems Timers and countdowns Notification indicators Home automation alerts DIY electronics and robotics projects