The research paper explores the perception of safety and security. The aim of this project development is to reduce the incident at home. In this model, we present the design and implementation of a home security system by using a global system for mobile communication modem (GSM). As the system senses/detects any parameter such as gas leakage, high temperature at home. It will respond and do alert to the homeowner. It also detects the intrusion by using of IR sensor placed at the entry point. All these sensors are associated with microcontroller ATmega328 which will produce output in case of tragedies. The GSM and microcontroller communicate through the USART protocol with the desired baud rate of 9600bps. In case of emergency, the system generates an alert message that can be transmitted to homeowners' service number which we have fed into the system. The idea behind this project is to provide a simple, affordable, fast, effective, and reliable way to get help in case of emergency situations.