{"product_id":"ky-012-3-pin-active-buzzer-module","title":"KY-012 3-Pin Active Buzzer Module","description":"\u003cp data-start=\"38\" data-end=\"319\"\u003eThe \u003cstrong data-start=\"42\" data-end=\"73\"\u003eKY-012 Active Buzzer Module\u003c\/strong\u003e is a compact and easy-to-use sound generation module designed for microcontroller projects. Unlike passive buzzers, this active buzzer has a built-in oscillation circuit, meaning it produces a continuous tone when powered—no PWM signal required.\u003c\/p\u003e\n\u003cp data-start=\"321\" data-end=\"461\"\u003eIt is ideal for alarms, notifications, warning signals, and simple audio feedback in Arduino, STM32, ESP32, and other development platforms.\u003c\/p\u003e\n\u003chr data-start=\"463\" data-end=\"466\"\u003e\n\u003ch2 data-start=\"468\" data-end=\"483\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"485\" data-end=\"676\"\u003e\n\u003cli data-start=\"485\" data-end=\"527\"\u003e\n\u003cp data-start=\"487\" data-end=\"527\"\u003eActive buzzer with built-in oscillator\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"528\" data-end=\"566\"\u003e\n\u003cp data-start=\"530\" data-end=\"566\"\u003e3-pin interface (Signal, VCC, GND)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"567\" data-end=\"593\"\u003e\n\u003cp data-start=\"569\" data-end=\"593\"\u003eSimple digital control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"594\" data-end=\"625\"\u003e\n\u003cp data-start=\"596\" data-end=\"625\"\u003eLoud and clear sound output\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"626\" data-end=\"648\"\u003e\n\u003cp data-start=\"628\" data-end=\"648\"\u003eCompact PCB design\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"649\" data-end=\"676\"\u003e\n\u003cp data-start=\"651\" data-end=\"676\"\u003ePlug-and-play operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"678\" data-end=\"681\"\u003e\n\u003ch2 data-start=\"683\" data-end=\"710\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul data-start=\"712\" data-end=\"910\"\u003e\n\u003cli data-start=\"712\" data-end=\"733\"\u003e\n\u003cp data-start=\"714\" data-end=\"733\"\u003e\u003cstrong data-start=\"714\" data-end=\"724\"\u003eModel:\u003c\/strong\u003e KY-012\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"734\" data-end=\"773\"\u003e\n\u003cp data-start=\"736\" data-end=\"773\"\u003e\u003cstrong data-start=\"736\" data-end=\"758\"\u003eOperating Voltage:\u003c\/strong\u003e 3.3V – 5V DC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"774\" data-end=\"801\"\u003e\n\u003cp data-start=\"776\" data-end=\"801\"\u003e\u003cstrong data-start=\"776\" data-end=\"785\"\u003eType:\u003c\/strong\u003e Active buzzer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"802\" data-end=\"850\"\u003e\n\u003cp data-start=\"804\" data-end=\"850\"\u003e\u003cstrong data-start=\"804\" data-end=\"823\"\u003eControl Signal:\u003c\/strong\u003e Digital HIGH to activate\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"851\" data-end=\"882\"\u003e\n\u003cp data-start=\"853\" data-end=\"882\"\u003e\u003cstrong data-start=\"853\" data-end=\"867\"\u003eInterface:\u003c\/strong\u003e 3-pin header\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"883\" data-end=\"910\"\u003e\n\u003cp data-start=\"885\" data-end=\"910\"\u003e\u003cstrong data-start=\"885\" data-end=\"910\"\u003eLow power consumption\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"912\" data-end=\"915\"\u003e\n\u003ch2 data-start=\"917\" data-end=\"937\"\u003ePin Configuration\u003c\/h2\u003e\n\u003cul data-start=\"939\" data-end=\"1035\"\u003e\n\u003cli data-start=\"939\" data-end=\"981\"\u003e\n\u003cp data-start=\"941\" data-end=\"981\"\u003e\u003cstrong data-start=\"941\" data-end=\"955\"\u003eS (Signal)\u003c\/strong\u003e – Digital control input\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"982\" data-end=\"1010\"\u003e\n\u003cp data-start=\"984\" data-end=\"1010\"\u003e\u003cstrong data-start=\"984\" data-end=\"995\"\u003e+ (VCC)\u003c\/strong\u003e – 3.3V or 5V\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1011\" data-end=\"1035\"\u003e\n\u003cp data-start=\"1013\" data-end=\"1035\"\u003e\u003cstrong data-start=\"1013\" data-end=\"1024\"\u003e– (GND)\u003c\/strong\u003e – Ground\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1037\" data-end=\"1126\"\u003eWhen the signal pin is set HIGH, the buzzer emits a tone. When set LOW, the buzzer stops.\u003c\/p\u003e\n\u003chr data-start=\"1128\" data-end=\"1131\"\u003e\n\u003ch2 data-start=\"1133\" data-end=\"1148\"\u003eApplications\u003c\/h2\u003e\n\u003cul data-start=\"1150\" data-end=\"1305\"\u003e\n\u003cli data-start=\"1150\" data-end=\"1167\"\u003e\n\u003cp data-start=\"1152\" data-end=\"1167\"\u003eAlarm systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1168\" data-end=\"1195\"\u003e\n\u003cp data-start=\"1170\" data-end=\"1195\"\u003eMotion detection alerts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1196\" data-end=\"1215\"\u003e\n\u003cp data-start=\"1198\" data-end=\"1215\"\u003eSafety warnings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1216\" data-end=\"1239\"\u003e\n\u003cp data-start=\"1218\" data-end=\"1239\"\u003eTimer notifications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1240\" data-end=\"1276\"\u003e\n\u003cp data-start=\"1242\" data-end=\"1276\"\u003eEducational electronics projects\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1277\" data-end=\"1305\"\u003e\n\u003cp data-start=\"1279\" data-end=\"1305\"\u003eEmbedded system feedback\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1307\" data-end=\"1310\"\u003e\n\u003cp data-start=\"1312\" data-end=\"1480\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eThe KY-012 Active Buzzer Module offers a simple and reliable solution for adding sound alerts to your electronic designs without the need for complex signal generation.\u003c\/p\u003e","brand":"Alpha 3D Lab","offers":[{"title":"Default Title","offer_id":51705762185496,"sku":"AB011","price":2.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6901\/3784\/files\/61N4L-R2Y4L._AC_SX679.jpg?v=1771587706","url":"https:\/\/alpha3dlab.com\/products\/ky-012-3-pin-active-buzzer-module","provider":"Alpha 3D Lab","version":"1.0","type":"link"}