The AMR system is conceptually based on the 3 following elements implementation:
a) The radio system embedded into the meter unit (the transponder) supplied by a battery package, including a data transceiver, a calibrated antenna and a microcontroller.
b) An operator's portable unit (PDA) to display the info collected by the transponders: the PDA is based on a data transceiver interfaced to a notebook and it is provided of keyboard and LCD display.
c) A central station as central data collector unit placed in the operative control center: through the central data collector unit it is possible to monitor the PDA unit; it is also possible to upload PDA instruction and display all collected datas to be computed in according to the specific tasks assigned to the system. The system, in the basic layout definition, is composed by different and separate stages: it is very important to under

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