The 2 Arduino's communicate using the RF module's, one as master other as slave. The sensor readings are taken and compared with threshold to enable the triggers. Also a Keypad is enabled if internet connection is dead. The Alarm wont turn ON if the password entered through the keypad .Otherwise the alarm will trigger and messaging is done. LPG sensor(MQ-6) also send message if it detects a leak inside the house. CO sensor will detect if there is any fire or smoke arriving and temperature sensor is set to trigger if fire occurs. Leave a Like , comment. Thanks for watching.
Please comment ur email for source code
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https://www.youtube.com/watch?v=G8fNqEbxgo4
Describing the matrix representation of vectors. Total Multiplication and addition operations involved in finding the product of two matrices
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https://www.youtube.com/watch?v=TMp9TIRGDko