Alarm

When a Alarm command signal is received by the consumer module,the controller triggers a buzzer interfaced

with it to warn the consumer few days before the deadline for payment.

If a Tripp Off signal is sensed by the microcontroller,the relay interfaced to the PIC controller is made to go to

LOW state cutting off the the power supply to the corresponding node.When the bill is paid by the consumer,

the relay is reset to normal HIGH state in response to the acknowledgement signal from the

Electricity Board Module.The diode used in the relay circuit is to suppress the back emf from being

looped up with the primary coil during induction of secondary voltages.