Fire alarm circuit diagram

low cost Fire Alarms

Fire alarm beeping circuit diagram

Thermistor works as the heat sensor

Simple fire alarm circuit using thermistor and BC558 , BC548 , NE555. Makes an alarm when the fire brakes. Circuit diagram of the audio speaker 8 ohm 1w.

fire alarm circuit
This is a really interesting explanation of the electrical process in low cost Fire Alarms. Thanks for sharing.

Fire alarm installers