Abstract:
The Burglar alarm gives an alarm
sound if any attempt is made to steal
the automobiles. The automobile alarm
can be designed in different ways
depending upon the type of the
automobile and place where it is to be
fixed in the automobile.
The alarm accepts signals from a
variety of sources including special
sensors and the standard switches in a
car such as the door and ignition
contacts. The circuit consists of timers
triggering circuit, delay and control
circuits which provides relay out-put that
controls an acoustic transponder (loud
speaker or buzzer).
