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The Active Alarm Buzzer Module produces a loud, continuous tone when powered, requiring no external frequency signal for operation. Featuring a built-in oscillator, Arduino-compatible interface, and compact PCB design, it delivers instant audio alerts for alarms, notifications, timers, and security systems in embedded electronics and IoT projects. , , , , , , , , , , , , , , , , , , , , , , , , , , , , , interface |
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