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The use of smartphone technology as a tool for communication is ever-increasing, and this technology shows no sign of decline. Moreover, since the era of social networking, smartphones have become a significant entity that humans cannot do without. Internet of things has now opened a new era where we can keep contact data, surf the internet, exchange messages, take notes, carry files and documents, etc. Besides, we can now control hardware like lights, fans, air conditioners, etc. This research aims at designing home security systems to keep selected space safe from intruders and detect gas leakage. The methodology integrated GSM module, ultrasonic sensor, Passive Infrared Sensor (PIR), and gas detectors to implement the wireless remote home security technology. This system adopts the Global System for Mobile Communication (GSM) technology for optimal functionality and is programmed to respond rapidly as intrusion or gas leakage is detected. The GSM module alerts the homeowner via phone call.

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