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5pcs Passive Buzzer Module 3-Pin 3.3–5V | Arduino DIY Kit
5pcs Passive Buzzer Module 3-Pin 3.3–5V | Arduino DIY Kit
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WALFRONT 5-Pack Passive Buzzer Module – 3-Pin LED Control, 3.3–5V
Take your DIY electronics and maker projects to the next level with this 5-pack of passive buzzer modules from WALFRONT. Unlike active buzzers, these passive modules have no internal oscillating source, which means you get full creative control over tone and frequency — perfect for generating custom sounds, musical notes, and audible alerts in your Arduino, Raspberry Pi, or any microcontroller-based project.
Key Features
- Frequency-Controllable Sound: Drive the buzzer with a 2K–5K Hz square wave to produce a wide range of tones — even musical scales like "do re mi fa so la si do."
- Wide Voltage Compatibility: Works with both 3.3V and 5V systems, making it compatible with virtually any microcontroller or development board.
- LED Multiplexing: In certain configurations, the control port can be shared with an LED — handy for saving GPIO pins on your board.
- 9012 NPN Transistor Driver: Reliable transistor-based driving circuit ensures stable, consistent output on every module.
- Easy Mounting: Each module ships with fixture nuts for quick and secure installation in your enclosure or project box.
- Compact PCB: Small 3.3 × 1.3 cm board footprint fits neatly into tight spaces.
- Simple 3-Pin Interface: Straightforward VCC / GND / I/O pinout — connect and code in minutes.
Specifications
| Item Type | Passive Buzzer Module |
| Quantity | 5 pieces per pack |
| Working Voltage | 3.3 V – 5 V |
| Drive Frequency | 2 KHz – 5 KHz (square wave) |
| Driver Transistor | 9012 NPN |
| PCB Size | 3.3 × 1.3 cm (approx. 1.30 × 0.51 in) |
| Pin Configuration | VCC (3.3–5V) | GND | I/O (microcontroller IO) |
| Trigger Level | Low level trigger |
| Country of Origin | Made in Mainland China |
What's in the Box
- 5 × Passive Buzzer Module (with fixture nuts)
Great For
- Arduino & Raspberry Pi projects
- DIY alarm and notification systems
- STEM and educational electronics kits
- Custom sound/music tone generators
- Prototyping and maker boards
For more maker-friendly components and DIY electronics, explore our "1% Better Every Day" Motivational Canvas Poster to inspire your workspace, or browse our "Everything Is Figureoutable" Canvas Wall Art to keep your build lab motivated.
For authoritative guidance on electronics safety standards, visit the U.S. Consumer Product Safety Commission (CPSC).
Frequently Asked Questions
Q: What is the difference between a passive buzzer module and an active buzzer module?
A: An active buzzer has a built-in oscillating circuit and will sound when DC voltage is applied. A passive buzzer module like this one has no internal oscillator — it requires an external square wave signal (typically 2 KHz–5 KHz) generated by your microcontroller. This gives you full control over the frequency and tone of the sound produced.
Q: Is this passive buzzer module compatible with Arduino and Raspberry Pi?
A: Yes. The module operates on 3.3 V to 5 V, making it fully compatible with Arduino (5V), Raspberry Pi (3.3V), ESP8266, ESP32, and most other popular development boards. Simply connect VCC, GND, and the I/O pin to a PWM-capable GPIO, then output a square wave at the desired frequency.
Q: Can I use the I/O control pin for an LED at the same time?
A: In certain circuit configurations, yes — the control port can be multiplexed with an LED, allowing you to save a GPIO pin while getting both visual and audible feedback from a single output.
Q: How do I mount the buzzer module securely?
A: Each module comes with fixture nuts that allow you to bolt it directly into a project enclosure, PCB standoff mount, or chassis. The compact 3.3 × 1.3 cm board makes it easy to integrate into tight spaces.
