Description
The KY-012 Active Buzzer Module is a compact sound-producing component that’s perfect for adding alerts, alarms, and audio feedback to Arduino, Raspberry Pi, or other microcontroller-based projects.
Unlike passive buzzers, the KY-012 includes a built-in oscillator, so it produces a continuous tone when powered—no need to generate frequencies with code.
This module is ideally suited for applications such as alarm systems, timers, simple notifications, and sound signalling, where a consistent beep or tone is required with minimal coding.
Its small form factor and simple 3-pin interface make it easy to integrate into compact builds or breadboard circuits.
- Module: KY-012
- Function: Active Buzzer (continuous tone when powered)
- Output Type: Digital (tone plays with HIGH signal)
- Operating Voltage: 3.3V – 5V (fully Arduino & Pi compatible)
- 3-Pin Interface: VCC, GND, Signal (S)
- Tone Type: Fixed continuous sound (approx. 2.5kHz)
- Module Size: 19mm x 15mm x 11mm
Key Features:
- Module: KY-012
- Function: Active buzzer – built-in tone generator
- Output: Continuous tone with HIGH digital input
- Voltage: 3.3V – 5V
- Interface: VCC, GND, Signal
- Plug-and-play – no complex coding required
- Great for audible alerts in embedded systems
- Breadboard and project box friendly
What’s Included:
- 1x KY-012 Active Buzzer Module
Great For:
- Audio Alerts in Arduino & Pi Projects
- Timers and Reminder Systems
- Intruder or Fault Alarms
- Sound Signalling in Robotics
- STEM Kits, Prototyping & Learning
Usage Tips:
- Send a HIGH signal to the control pin to activate the tone
- No need to use tone() or analogWrite() – the tone is built-in
- Simple to use with digitalWrite(pin, HIGH) in Arduino
- Ideal when you want sound with minimal coding overhead
- Want to play varied tones or melodies? Try the KY-006 passive buzzer instead
