The microcontroller’s interrupt is used to overlook security and surveillance such as smoke, fire,
gas or intrusion detection. If any of the sensors are triggered, interrupt is generated. The
microcontroller then determines the type of interrupt that have been generated. Once the type of
interrupt generated is known, the siren is turned on and email notifications are sent to the user
specified personals including the user. For example, if a fire is detected in the kitchen the email received by the user will have email subject as “Smart Home Alert” and the body as “Fire
Detected in the Kitchen”. The user can switch off the siren from the user app or it will turn off
automatically after a certain period of time depending on user requirements.