How to make Fire Detector Alarm / Sinhala

Опубликовано: 05 Июль 2026
на канале: Sayuru tech

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How to make Fire Detector Alarm / Sinhala

Required Materials

BC 547 Transistor
DC Buzzer
220 Ohm Resistor
Infrared Receiver LED
LED
9V Battery connector
9V Battery

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