Security has become an essential part of our everyday lives, especially at home. The likelihood of an increase in intrusions may rise, posing a threat to everyone. The researchers proposed a home intrusion alarm system that aims to keep the house safe and secure at all times. An ESP32 board, two sensors (a PIR sensor and a magnetic door sensor), an LED, a sound buzzer, and a camera comprise the majority of the system. With the utilization of GSM, the user will receive an SMS notification and will be able to disarm and re-arm the system via the mobile application. Arduino IDE and Android Studio were used in the development of hardware and mobile application. PIR sensors were placed in a specific spot where they might detect unwanted movement. The system was tested by an experimental approach and trial-and-error basis. The researchers ran the system several times to test the device's functionality. The results were discussed and the system has been demonstrated to be successful and efficient. The study indicates that the intrusion alarm system is an effective technique to give extra protection in addition to the physical security that you have inside your home.

Keywords: alarm, home security, motion sensor, intrusion, and SMS notification