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Serial Bluetooth Adapter - RS232, Long Range - 5V ONLY

  • Model: 5V-UCBT232EXA
  • In Stock


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This adapter is the exact same as part UCBT232EXA with the only difference that this adapter can be powered with only 5VDC.

This industrial strength serial Bluetooth RS232 adapter is similar to our standard serial Bluetooth adapter, the main difference is that this adapter has an external di-pole antenna which makes it more reliable at longer communication distances and in noisy environments such as factory and industrial environments.

A serial Bluetooth adapter allows you to easily and efficiently establish a secure and highly reliable wireless serial Bluetooth RS232 connection within the 300 feet range, regardless if your application is new or old.
This serial Bluetooth RS232 adapter is suitable for industrial applications in machine shops, warehouses, office spaces and other industrial locations which require highly reliable and solid connections.

Great for wireless communication with industrial process machinery, CNC's, building control, scales, alarm and security devices, printers, telescopes (tested with ASCOM drivers under Windows with Celestron and Meade telescope mounts and SkySafari on Android), manufacturing machinery and most other industrial and commercial serial devices. This adapter will also work with most Cisco routers and switches (tested with Cisco Catalyst 3560).

You can communicate with this Bluetooth serial adapter via standard built-in Bluetooth or by using an external USB Bluetooth dongle. The advantage of using one of these methods is that you will need only one Bluetooth serial adapter to setup a communication link.
If you want a direct cable replacement which automatically connects your devices wirelessly without the need for a computer then you can also use this adapter in pairs, (see illustrations below).

For easy configuration of the parameters in this adapter we recommend using our USB to serial adapter cable part XS880, unless you have a serial COM port available in your computer.
The parameters can however also be configured over Bluetooth if you have built-in Bluetooth or if you are using a USB Bluetooth dongle.

Each package contains one Bluetooth serial adapter which works as a full duplex transceiver, meaning it can both transmit and receive data. You will need two of these Bluetooth serial adapters to setup a communication link unless you already have a built-in or external Bluetooth dongle. Take a look at our detailed setup examples to see how this adapter can be setup.

Simplified setup examples:
serial bluetooth RS232 diagram 1
serial bluetooth diagram 2
Serial Bluetooth setup 3
Serial Bluetooth adapter setup 4

Overall features
  • Can be powered by: USB, DB9, power supply or battery
  • Highly configurable over serial or wireless interface
    using simple ASCII commands
  • External antenna
  • Communication range up to 300 feet
  • Works with most mobile devices / operating systems
  • USB power cable included
  • DCE/DTE controlled by switch
  • Can be powered through the serial interface
  • LED control lights
  • Works with most serial RS232 devices
  • Full duplex, can send and receive at the same time
  • Many advanced features
  • Works with Cisco routers and switches
  • Male/male gender changer included
Included items
  • Serial Bluetooth adapter
  • USB cable (for power)
  • Wire for connecting battery
  • Datasheet
  • Di-pole antenna
  • Male/male gender changer


Useful optional accessories
(not included)

usb power supply
USB Bluetooth dongle 200ft

usb power supply
USB Bluetooth dongle 25ft

usb power supply
USB mini 110V/5VDC Power adapter

Battery pack
Rechargeable battery pack

null modem adapter
Null modem adapter
Part number UCBT232EXA
Operating systems Windows 11, Windows 10, Windows 8, Windows 7, Vista, XP, 2000, ME, 98, Linux, Mac, Android
Interface type RS232
Works with iPad/iPod? No, however it does work with most other Bluetooth enabled smartphones, tablets and devices
Chipset CSR BlueCore4 model BC417
Baud Rate 1200, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600
Data bits 7 or 8
Stop bits 1 or 2
Parity None, odd, even
Data buffer size 4Kb
Operating distance Up to 330 feet (100 meters) in open space
LED lights TX, RX and Power
Bluetooth stack Serial Port Profile (SPP)
PIN PIN code available for pairing
Connection type Point-to-point
Flow control CTS/RTS
DEC/DTE Manual switch
Parameters configurable by
  • Terminal software such as Tera Term or Putty
  • Over Bluetooth
  • RS232 Signals TX, RX, CTS, RTS, GND
    Echo Configurable by software (on/off)
    NMEA 183 compatible Yes
    Works with Cisco products Yes, routers and switches (tested with Cisco Catalyst 3560)
    Works with Windows 2008/20012 Server? No, Windows Server does not have built-in Bluetooth drivers
    Can pair while serial interface receives data Yes
    Full duplex RS232 Yes, can send and receive simultaneously both when connected over Bluetooth and when used in pairs.
    Number of slaves per master 7
    Parameter configuration Through the serial port or over Bluetooth
    Serial port 1-port female D-sub 9-pin
    Bluetooth standard V2.0 Class 1, + EDR
    Frequency range 2.4GHz – 2.4835 GHz ISM Band
    Hopping 1.600/sec, 1MHz channel space
    Modulation GFSK-1, DQPSK-2, 8-DPSK-3 Mbps
    Tx power Max. 18dBm (class 1)
    Rx sensivity -86 dBm typical
    Antenna 2.4Ghz, 2dBi di-pole, Reverse Polarity SMA (RP-SMA) male connector (inside threads / center receptacle)
    Antenna connector (on adapter) Reverse Polarity SMA (RP-SMA) female connector (outside threads / center pin)
    Power supply +5 to +6VDC powered by:
    Option 1: USB cable (included)
    Option 2: Pin 9 on DB9 connector
    Option 3: External battery (not included)
    Option 4: Mini USB adapter (not included)
    Current consumption Max 90mA
    Operating temp. -13°F to 185°F (-25°C to 85°C)
    Dimensions 87 x 33 x 16 mm
    Total package weight 130g
    Certifications CE, FCC

    For alternative wireless serial solutions please see our full selection of wireless RS232 adapters.


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