An intruder alarm is a crucial component of modern electronic security systems, designed to detect unauthorised entry into a property. These systems employ various sensors, such as motion detectors and door/window sensors, to monitor for suspicious activity. When an intrusion is detected, the alarm activates, alerting the occupants and potentially notifying security personnel or law enforcement. The effectiveness of an intruder alarm lies not only in its ability to deter burglars but also in its integration with other security measures, such as CCTV cameras and home automation systems, providing comprehensive protection for homes and businesses alike.