A system to monitor and transmit a plurality of signals based on a characteristic of a user is disclosed. The system comprises a sensor to produce the plurality of signals on a continuous basis, the signals being indicative of a glucose characteristic measured in the user when a portion of the sensor is placed in subcutaneous tissue. The system further includes a recorder including a recorder port to physically couple and interface with a sensor port of the sensor and a dock remotely located from the sensor and the recorder. The dock includes a dock receiver to physically couple and interface with the recorder port. The recorder can record the signals produced from the sensor when the recorder is coupled to the sensor and the recorder can transmit the stored signals to the dock when the recorder is removed from the sensor and coupled to the dock.