Abstract
The advance in technology has negatively affected to a home as crime rate is increasing as well as any other emergency case due to lack of awareness on security and safety when a person are on vacation. Overall, the paper presents the design of the security of home against intruders, fire and leakage of gas by alarming the specific person via Short Message Service (SMS) through Global System for Mobile Communication (GSM) modem. The system required the integration of PIC16F877A microcontroller with input and output devices such as GSM module, gas detector, vibration sensor, LDR sensor, keypad and magnetic door lock. The home security system has a special feature which is capable to send an immediate alert message to both homeowner and relevant civil authorities in order to prevent the incidents grow critically. Besides, the security system also provides a door lock security system that required a password entering by using a keypad. Finally, the system is able to send sms to both home owner and the authority bodies has been discussed.
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