A device for receiving a transmitting unit that is detachably attachable to a sensor unit configured to be placed on a subject to acquire a biosignal of the subject and that acquires bio-information from the biosignal acquired in the sensor unit to transmit the biosignal to an external device. This device has first and second ports on which transmitting units can be placed, and communication sections each provided in a respective one of the ports to carry out communication with the transmitting units mounted on the respective ports. When the transmitting unit is newly mounted on one port, the device acquires transmission data including communication identification information for the transmission from the newly mounted transmitting unit by the communication section of this port and transmits the acquired transmission data to another transmitting unit already mounted on the other port by using the communication section provided in the other port.
