The DB-9 Bluetooth adapter BC20-41400 uses an RS232 connection to allow equipment such as the DA-2006, DA-2006P, ESU-2300, ESU-2050 & ESU-2050P to be controlled by a mobile phone as well as exporting output data to MyBC Mobile. BC Biomedical Bluetooth Adapters connect to existing BC Biomedical equipment to upgrade them to Bluetooth capability.