{"product_id":"passive-buzzer-module-3-pin-led-control-3-3-5v-5pcs-arduino","title":"5pcs Passive Buzzer Module 3-Pin 3.3–5V | Arduino DIY Kit","description":"\u003ch2\u003eWALFRONT 5-Pack Passive Buzzer Module – 3-Pin LED Control, 3.3–5V\u003c\/h2\u003e\n\u003cp\u003eTake your DIY electronics and maker projects to the next level with this \u003cstrong\u003e5-pack of passive buzzer modules\u003c\/strong\u003e 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.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency-Controllable Sound:\u003c\/strong\u003e 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.\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Works with both 3.3V and 5V systems, making it compatible with virtually any microcontroller or development board.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Multiplexing:\u003c\/strong\u003e In certain configurations, the control port can be shared with an LED — handy for saving GPIO pins on your board.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e9012 NPN Transistor Driver:\u003c\/strong\u003e Reliable transistor-based driving circuit ensures stable, consistent output on every module.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Mounting:\u003c\/strong\u003e Each module ships with fixture nuts for quick and secure installation in your enclosure or project box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact PCB:\u003c\/strong\u003e Small 3.3 × 1.3 cm board footprint fits neatly into tight spaces.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimple 3-Pin Interface:\u003c\/strong\u003e Straightforward VCC \/ GND \/ I\/O pinout — connect and code in minutes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eItem Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePassive Buzzer Module\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 pieces per pack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3 V – 5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDrive Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 KHz – 5 KHz (square wave)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDriver Transistor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9012 NPN\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePCB Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3 × 1.3 cm (approx. 1.30 × 0.51 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVCC (3.3–5V) | GND | I\/O (microcontroller IO)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrigger Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLow level trigger\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e5 × Passive Buzzer Module (with fixture nuts)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eGreat For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eArduino \u0026amp; Raspberry Pi projects\u003c\/li\u003e\n  \u003cli\u003eDIY alarm and notification systems\u003c\/li\u003e\n  \u003cli\u003eSTEM and educational electronics kits\u003c\/li\u003e\n  \u003cli\u003eCustom sound\/music tone generators\u003c\/li\u003e\n  \u003cli\u003ePrototyping and maker boards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more maker-friendly components and DIY electronics, explore our \u003ca href=\"\/products\/1-percent-better-every-day-motivational-canvas-wall-poster-inspirational-quote\"\u003e\"1% Better Every Day\" Motivational Canvas Poster\u003c\/a\u003e to inspire your workspace, or browse our \u003ca href=\"\/products\/everything-is-figureoutable-sage-green-quote-canvas-wall-art\"\u003e\"Everything Is Figureoutable\" Canvas Wall Art\u003c\/a\u003e to keep your build lab motivated.\u003c\/p\u003e\n\n\u003cp\u003eFor authoritative guidance on electronics safety standards, visit the U.S. Consumer Product Safety Commission (CPSC).\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between a passive buzzer module and an active buzzer module?\u003c\/h4\u003e\n\u003cp\u003eA: An active buzzer has a built-in oscillating circuit and will sound when DC voltage is applied. A \u003cstrong\u003epassive buzzer module\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this passive buzzer module compatible with Arduino and Raspberry Pi?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use the I\/O control pin for an LED at the same time?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I mount the buzzer module securely?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between a passive buzzer module and an active buzzer module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"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.\"}}, {\"@type\": \"Question\", \"name\": \"Is this passive buzzer module compatible with Arduino and Raspberry Pi?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"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.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use the I\/O control pin for an LED at the same time?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"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.\"}}, {\"@type\": \"Question\", \"name\": \"How do I mount the buzzer module securely?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Each module comes with fixture nuts that allow you to bolt it directly into a project enclosure, PCB standoff mount, or chassis. 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