{HEAD ~ A security network} for a building using {TAIL ~ at least one RFID reader} to communicate with at least one RFID transponder to provide the radio link between each of a number of openings and a control function capable of causing an alert in the event of an intrusion 
{ HEAD ~ A security network } for a building using { TAIL ~ at least one RFID reader } to communicate with at least one RFID transponder to provide the radio link between each of a number of openings and a control function capable of causing an alert in the event of an intrusion
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