Burglar alarm system is an important part of home security systems. This burglar alarm project is based on PIR sensor, PIR sensor used to detect body motion and Police siren after any movement detection
This burglar alarm circuit is very simple, whenever PIR sensor detects any human body movement, its OUTPUT pin becomes HIGH, Power supply activated and start producing sound using buzzer module. doesn’t produce much output to drive a driver and dc motor to open door or not , if person is unautherised then send picture of the person through email notification.