The home security system is important aspect of human daily life. The advanced developments in hardware sensors which make them valuable devices for detecting abnormal actions inside the home. Furthermore, the availability of home Wi-Fi internet connection makes the user to remotely watch and monitor her/his home from wherever the user exists. The system is designed with different sort of sensors distributed inside the home. These sensors are connected to a microcontroller which in turn continuously listening to sensors change events. Also, the Wi-Fi components integrated in the microcontroller is used by the microcontroller to send and notify the user or the emergency center for unusual events. The system is implemented based on microcontroller (pic18f45k22) with its software written in microc IDE. Java language (net beans IDE) is used to communicate between the local home server and the microcontroller, also java language (android studio IDE) is used to create android mobile app (client).