The project presents a versatile security and
alarm system which can be used by individuals, corporations and
establishments which require a cheap but reliable security
system. The idea behind this project is to provide its users with a
simple, fast and reliable way to get help during emergency
situations. The device can be placed at any remote location
which can be easily accessed by the user. It uses a
microcontroller for system control, GSM technology for
communication and sends SMS containing the emergency
message and the GPS location of the sender. The project consists
of an 8-bit microcontroller ATmega 16, GSM SIM900A module
and two Android applications for user interface with the
hardware. One of the application configures the device. On
pressing the panic button, the emergency contact receives the
emergency message along with the GPS location of the sender.
The device has been made for less than 1300INR and it can be
used anywhere irrespective of the place of deployment provided
mobile network connectivity is available.