Скачать или смотреть 🔔 KY-012 Active Buzzer Module Showcase

In this video, we highlight the KY-012 Active Buzzer Module in a clean tabletop showcase.
No wiring or testing is shown, only a smooth presentation of the component for makers and electronics enthusiasts. Great for alarms, sound alerts, Arduino projects, and simple audible feedback systems.

Finally, the KY-012 Active Buzzer Module is a self-driven sound generator that produces a fixed-tone beep whenever it receives power, requiring no PWM or frequency control from the microcontroller.
It’s perfect for alarms, notifications, timers, and simple sound-feedback systems in Arduino and ESP projects.

If this item interests you, here is the link you can use.
https://amzn.to/3M9Jn5J

📌 Specifications:
Type: active buzzer (built-in oscillator)
Operating voltage: 3.3 V to 5 V
Sound output: ~85 dB at close range
Frequency: fixed tone (around 2–4 kHz depending on module)
Current draw: ~20–30 mA
Pins: VCC, GND, I/O
Trigger: digital HIGH activates sound
Compatibility: Arduino, ESP32, Raspberry Pi
Applications: alarms, alerts, feedback beeps, timers, sound indicators


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