To facilitate the manufacture of an accurate receiver, a piezoelectric device manufacturer determines characteristic data, such as an approximate expression representative of a temperature characteristic of piezoelectric device and coefficients of the approximate expression, and stores it to a memory of a manufacturer's computer corresponding to a serial number of each piezoelectric device. The piezoelectric device manufacturer, ships a piezoelectric device to a vendor, transfers the characteristic data of the piezoelectric device to the vendor server through a communication network. The client, when the purchased piezoelectric device is mounted on an electronic appliance, reads out a serial number and inputs it to the client's computer. The client's computer acquires the characteristic data of the piezoelectric device corresponding to the serial number from the vendor server through the communication network, and writes it to a memory of the electronic appliance.