• bl 819 bluetooth 1xrs232 male dte class 2
  • BL 819 RS 232 Pinout
bl 819 bluetooth 1xrs232 male dte class 2
  • 1 Port Male RS-232 Bluetooth to Serial Adapter
  • Data rate from 110 to 921,600 baud
  • Optional Power on Pin 9
  • Suitable for ANY device with a serial port
  • Range, Field: 30m, Office: 10m
  • Lifetime Support, 3 Year Warranty
  • BL-819-datasheet (0.60 MB)
NRND: Not Recommended for New Designs

This product is not recommended for new designs. However the device, continues to be in production to support existing customers. Brainboxes encourages designers to consider our alternative products for new designs.

Brainboxes guarantees to keep this part in production until 2020-June-1st. And will continue to offer lifetime product support.

Volume users please contact [email protected] and we will work to ensure continued supply.


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.

Customer Feedback

Operating Systems

Tech Spec

Serial Port
ConnectorDB9 Connector - 9 Pin Male
Tx FIFO Size128
Rx FIFO Size128
Operating DistanceEIA - RS232 Standard
Serial Port Settings
Max Baud Rate1,000,000 (1 MegaBaud)
Data Bits8
ParityOdd, Even, None, Mark or Space
Stop Bits1, 1.5 or 2
Flow ControlXON/XOFF Software handshake or RTS/CTS hardware handshake
Tx/Rx ModesPoint to Point
Bluetooth Settings
Bluetooth Qualification1.1 Qualified
Bluetooth ClassClass 2
Bluetooth Flow ControlDTR/DSR
Radio Frequency2.45 GHz
Supported Bluetooth ProfilesSPP (Serial Port Profile)
PCB Layers4
Storage Temperature-40 °C to +85 °C / -40 °F to +185 °F
Power ConsumptionDepends on usage
Product Weight0.034 kg, 1.20 ounces
Product Dimensions90x37x18 mm, 3.5x1.5x0.7 inches
Packaged Weight0.368 kg, 12.98 ounces
Packaged Dimensions200x135x80 mm, 7.9x5.3x3.1 inches
GTIN (barcode)837324000054
Operating System Compatibility
Operating Systems
  • Suitable for any device with Serial Port





Typical Product Applications

  • Router Console Connection
  • Bluetooth connection to network switches
  • Serial link to test equipment
  • Connecting a Win8 tablet to a serial port radio
  • Connect Laptop to Routers and Switches
  • Bluetooth enable Ham radio station with serial port
  • For working from serial console to Cisco and Juniper products
  • Device communications
  • PBX (Private Branch eXchange) hardware access over bluetooth
  • Bluetooth CNC file transfer from a PC to a CNC machine
  • Connect a GPS to a mobile phone with bluetooth in order to get RTK corrections via NTRIP access