In this video, we build a simple yet life-saving fire alarm system.
We explain the working principle of each component — thermistor, transistor, potentiometer, battery, and buzzer — and demonstrate step-by-step connections and testing in Proteus simulation and real life.
Learn how to adjust sensitivity, set buzzer frequency, and ensure reliable operation for your home or project.
✅ Perfect for electronics beginners and students
✅ Easy-to-follow Proteus simulation
✅ Life-saving fire alert system
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