The KY-012 Active Buzzer Module is a compact and easy-to-use sound generation module designed for microcontroller projects. Unlike passive buzzers, this active buzzer has a built-in oscillation circuit, meaning it produces a continuous tone when powered—no PWM signal required.
It is ideal for alarms, notifications, warning signals, and simple audio feedback in Arduino, STM32, ESP32, and other development platforms.
Key Features
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Active buzzer with built-in oscillator
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3-pin interface (Signal, VCC, GND)
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Simple digital control
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Loud and clear sound output
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Compact PCB design
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Plug-and-play operation
Technical Specifications
Pin Configuration
When the signal pin is set HIGH, the buzzer emits a tone. When set LOW, the buzzer stops.
Applications
The KY-012 Active Buzzer Module offers a simple and reliable solution for adding sound alerts to your electronic designs without the need for complex signal generation.
