A method of treating a mental condition in a subject in need thereof, comprising: administering to a subject in need thereof an effective amount of compound CDD-102A. The channel comprises at least one first transmission channel having a primary bit rate and at least one second transmission channel having a secondary bit rate. Further, when the successively-alternate increasedecrease tendency has occurred and the at least one characteristic value is located within the control region outside the normal region, an alarm state is detected. The low frequency transmitter transmits location identification information, such as the transmitter ID, to a tag in the vicinity of the transmission.