First we discuss the hardware module. We have four basic
component of this module, which can be seen in the hardware
module block diagram. Now we start our discussion from the
metering circuitry which consist of a conventional electric
meter and a U- shape infrared sensor, the basic reason to use
U- shape infrared sensor is to observe number of rotation of the
electric meter disk, then by using this number of rotation, we
can calculate the energy consumed by the user. In the metering
circuitry we have also used an LCD, to display the number of
units either consumed by the user or the remaining units of
prepaid user.