A blood pressure meter, a thermometer, and a pulse oximeter are connected to the control apparatus, and the control apparatus includes an input unit configured to wirelessly input information identifying a measurement time and unique information along with the measurement value from the measurement devices, a processing unit configured to store the inputted measurement value and unique information in a memory, and an authentication unit configured to authenticate the measurement device that inputted the measurement value as being the same as a measurement device that inputted a stored measurement value by comparing the unique information with unique information stored along with a measurement value measured prior to the inputted measurement value. Here, the processing unit is configured to store the inputted measurement value in the case where the authentication succeeds.