{"product_id":"active-buzzer-dc-3-5v-85db-sounder-module-for-arduino-raspberry-pi","title":"Active Buzzer DC 3-5V 85dB Sounder Module for Arduino \u0026 Raspberry Pi","description":"\u003ch1\u003eActive Buzzer\u003c\/h1\u003e\n\u003cp\u003eThis active buzzer generates a continuous tone when DC voltage is applied—no external oscillator needed. Just power it with 3–5 V to get an 85 dB alert at 2.3 kHz, perfect for alarms, timers, and status indicators in embedded projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3–5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003e≤30 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSound Output\u003c\/td\u003e\n\u003ctd\u003e85 dB at 10 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResonant Frequency\u003c\/td\u003e\n\u003ctd\u003e2.3 ± 0.3 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12 mm x 9.5 mm (⌀ x H)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePin Spacing\u003c\/td\u003e\n\u003ctd\u003e6.5 mm (2-pin header)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-countdown-timer\"\u003eCountdown timer with audible beep\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-fridge-door-open-alarm\"\u003eDoor-open alarm for home security\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eTemperature threshold alert (combine with LM35)\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-simon-says-memory-game\"\u003eSimon Says memory game with sound feedback\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eWorks directly with Arduino Uno, Nano, Mega, and Raspberry Pi GPIO (via transistor for higher current). Accepts 3.3 V logic level for control—simply connect the positive pin to the MCU pin through a current-limiting resistor (100 Ω). Common pairings include Arduino tone-generating projects or as a simple alert alongside LCDs and sensors.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eRed wire to VCC (3–5 V), black to GND. Drive the buzzer directly from an Arduino digital pin (set HIGH to sound) with a 100 Ω resistor in series. Max current draw is 30 mA; do not exceed 5 V or continuous operation beyond 30 seconds may affect longevity.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the active buzzer works with any Arduino board. Connect the positive lead to a digital pin (with a series 100 Ω resistor) and the negative to GND. Drive the pin HIGH to sound the buzzer; no tone() library needed.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I control the volume?\u003c\/summary\u003e\u003cp\u003eVolume is fixed. To reduce loudness, you can add a series resistor (100–220 Ω) or use PWM, though the tone may distort. For adjustable volume, consider a passive buzzer with a potentiometer.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this work with 3.3 V logic?\u003c\/summary\u003e\u003cp\u003eYes, the buzzer activates reliably from 3 V, so it works with 3.3 V boards like Raspberry Pi Pico, ESP8266, or STM32. For Raspberry Pi GPIO, use a transistor driver because the pin current is limited.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445137236333,"sku":"CDN-0850","price":45.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_70349e87-5bf4-4aca-9d54-2c909f5744fc.jpg?v=1781513521","url":"https:\/\/compoden.com\/products\/active-buzzer-dc-3-5v-85db-sounder-module-for-arduino-raspberry-pi","provider":"Compoden","version":"1.0","type":"link"}