To make a user and a data processor at a remote place not to recognize that the reception of a setting command for a wireless communication terminal has bean made, when the wireless communication terminal at a remote place receives the command.

This wireless communication terminal 6 is connected to a data processor 5 and is configured to send or receive data with wireless communication to or from a control source 1 and to execute the prescribed reception operation, when data are received. In the case that the setting of the wireless communication terminal 6 is made by allowing the wireless communication terminal 6 to receive the command (remote command) for setting the wireless communication terminals 6 and sent from the control source 1, it is so constituted that no reception is executed. In the case of this configuration, since the wireless communication terminal 6 will not execute reception operation when the wireless communication terminal 6 receives the setting command, the data processor 5 will not know of the reception.