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How To Make A Sound Activated Alarm Using Arduino and An Active Buzzer (a DIY electronic set up) - YouTube
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Fire Alarm System using Arduino, Flame Sensor, LED and Buzzer - Electronics Projects
Arduino - Sound Sensor (with LED) : 5 Steps (with Pictures) - Instructables
10pcs DC 3.3-5V Passive Low Level Trigger Buzzer Alarm Sound Module for Arduino - AliExpress
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