Compact, Award winning Brainboxes RS232 Adaptor (BL-819 - male connector or BL-830 female connector) allows any device with an RS232 port to communicate with another Bluetooth device without the need for any additional software. Ideal for Bluetooth enabling dumb RS232 devices such as dataloggers etc. with option to power from Pin 9. Based on fully tested Bluetooth silicon, allowing communications at the full Bluetooth data rates. No visible antenna.