Simple Door Security Alarm Circuit with Magnetic Reed Switch
used this component:
NO(Normally Open) Reed Switch - 1 PCs
9V Buzzer - 1 PCs
Transistor BC547 - 2 PCs
LED - 1 PCs
100 Kilo-Ohm Resistor - 1 PCs
680 Ohm Resistor - 1 PCs
22uF Electrolytic Capacitor - 1 PCs
9V DC Power
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