Security challenges in Nigeria specifically and the world everywhere have become the best difficulties of man in the ongoing occasions, because of the rising paces of wrongdoings like robberies, theft, seizing, executing and furnished burglary. The point of this undertaking was to develop a GSM based home security alert system, that will be fit for identifying an interloper, send ready message to mortgage holder, and initiate a bell caution. The security ready framework has been effectively built utilizing a uninvolved infrared (PIR ) sensor. Arduino microcontroller was utilized to interface between the PIR sensor (input) and the GSM/buzzer (yield) gadgets. The PIR sensor was proposed to recognize the nearness of human and convert the identified sign into electrical voltage signal. The arduino uno was to process the flag and send directions to GSM module and buzzer, at the same time. The developed gadget was tried by enabling human to move before the PIR sensor and the GSM module sent an instant message to the mortgage holder, that there is an intruder, while the ringer sounded simultaneously, affirming its usefulness.
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