Make some noise! This active piezo buzzer sounds the moment you apply DC voltage — the oscillator is built in, so unlike a passive buzzer it needs no tone signal from your Arduino. Wide 3V–12V operating range, clear and loud output, compact 2-pin DIP package that mounts straight onto PCBs and breadboards. The go-to sound maker for Arduino projects, alarms and robotics.

Key Features

• Active buzzer with built-in oscillator — just apply DC voltage, it sounds
• Wide operating voltage: 3V – 12V DC
• Clear and loud sound, high output volume
• Compact 2-pin DIP package — direct PCB and breadboard mount
• Easy to use, no extra circuitry needed
• Peel off the protective sticker on top for full volume

How to Connect (Usage)

Wire the buzzer to your Arduino as follows:

Arduino Example Code (beep pattern):

void setup() {
  pinMode(8, OUTPUT);
}
void loop() {
  digitalWrite(8, HIGH);  // buzzer on
  delay(200);
  digitalWrite(8, LOW);   // buzzer off
  delay(1000);
}

Find more sound and signal parts in our ICs & Components collection.

Applications

• Arduino Projects — alarms, timers and alerts
• Alarm systems and warning indicators
• Robotics Projects — status beeps and obstacle alerts; see our Robotics parts
• DIY electronics and doorbells
• School and STEM learning projects

Frequently Asked Questions

Q: What is the difference between an active and a passive buzzer?
A: An active buzzer (this one) has a built-in oscillator — apply DC voltage and it sounds on its own. A passive buzzer needs a continuous tone signal from the microcontroller to make sound.

Q: How do I know which pin is positive?
A: The + terminal is marked on the buzzer casing. Connect + to your signal pin and − to GND.

Q: Can an Arduino pin drive it directly?
A: Yes — connect it straight to a digital pin (e.g. D8) and GND; at 5V an Arduino pin handles it with no extra parts.

Q: Will it work on 3.3V?
A: Yes — it works across the full 3V to 12V range.

Q: Why does mine sound quiet?
A: Peel off the white protective sticker on top of the buzzer — it covers the sound hole and muffles the volume until removed.

Q: Where can I buy an active buzzer in Pakistan?
A: Right here — QKZee Technologies stocks them at our Hall Road, Lahore shop with Cash on Delivery across Pakistan.