Home School level projects Fire alarm system using BC547 Fire alarm system using BC547 Author - personUday kiran October 12, 2021 0 share Fire alarm system using BC547........... COMPONENTS REQUIRED Item Image Item Name Quantity BC547 1 No Buzzer 1 No Switch 1 No HW Battery with Clamp 1 NO infrared RX 1 NO LED 1 NO 220 resistor 1 NO Tools Required Tool Image Tool Name Gun gum Soldering rod CIRCUIT DIAGRAM Tags on googleSchool level projects Facebook Twitter Whatsapp Newer Older