RFID SYSTEM FOR METER

PROBLEM TO BE SOLVED: To provide an RFID(radio frequency identification) system capable of reading/writing integrated value information or management information of a meter. SOLUTION: An induction electromotive force is generated in a first coil 24 by a radio wave of a first radio frequency from a handy terminal 30, and the power is supplied by a power source circuit 21 to start measurement for a gas meter 10. Integrated value data stored in the gas meter 10 is transmitted to the handy terminal 30 through the first coil 24. Meanwhile, an induction electromotive force is generated in a second oil 26 by a radio wave of a second radio frequency from the handy terminal 30, and the power is supplied by te power source circuit 21 to store integrated value data, which is obtained from the gas meter 10, in a storage part 25 from the handy terminal 30. Management data like the management number or the date of replacement of the gas meter is stored in the storage part 25, and these pieces of information are read/written by the handy terminal 30 if necessary.