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If the buzzer needs more current than your board's pin can supply, switch it with an NPN transistor such as the 2N2222 or BC547 and a 1 kΩ base resistor.\u003c\/p\u003e","brand":"Beirut ElectroCity","offers":[{"title":"Default Title","offer_id":41536485720198,"sku":"10010167","price":0.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1909\/3589\/products\/Active-Buzzer.jpg?v=1745910497"},{"product_id":"5v-passive-buzzer","title":"5V passive Buzzer","description":"\u003cp\u003eThe \u003cstrong\u003e5V passive Buzzer\u003c\/strong\u003e is a small sound component without a built-in oscillator. Instead of beeping on its own when powered, it makes sound only when you drive it with a changing signal, so you choose the pitch. That means it can play different tones, beeps and simple melodies from an Arduino, ESP32 or 555 timer circuit, which a fixed-tone active buzzer cannot do.\u003c\/p\u003e\u003ch2\u003e5V passive Buzzer Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e passive buzzer, no internal oscillator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated voltage:\u003c\/strong\u003e 5 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive signal:\u003c\/strong\u003e square wave or PWM in the audio range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTone:\u003c\/strong\u003e set by the frequency you send, so one buzzer can play many notes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl:\u003c\/strong\u003e Arduino tone() function, a PWM pin or an oscillator circuit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003e5V passive Buzzer Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePlaying melodies and notes with the Arduino tone() function\u003c\/li\u003e\n\u003cli\u003eAlarm, timer and doorbell sounds with different tones\u003c\/li\u003e\n\u003cli\u003eKeypad and button feedback beeps\u003c\/li\u003e\n\u003cli\u003eGame and toy sound effects\u003c\/li\u003e\n\u003cli\u003eSTEM lessons on sound and frequency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e1 × 5V passive buzzer\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e A passive buzzer stays silent on plain DC. 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