m menu image  m home m cart

Your header in Here


Serial Bluetooth 4.2 Smart® Adapter - RS232
Low Energy BLE - Version 2

  • Model: USBLE232D


Sold Out


This product has been discontinued and replaced by part number S2B5232E.

This serial Bluetooth adapter is similar to our USBLE232C adapter; the only difference is that this adapter has a new enclosure for better protection against interference and the option for an external antenna (antenna version not yet released), and then it has a DB9 male connector with thumb-screws instead of a female connector.

This adapter is a Bluetooth V4.2 Low Energy (BLE) adapter, also commonly called Bluetooth Smart®. It will allow you to communicate with most serial RS232 devices using a Bluetooth Smart® enabled device such as an iPad/iPhone, Android, Windows tablet or any other Bluetooth Smart enabled device.
Notice that this adapter REQUIRE a Bluetooth Smart® compatible device / application to be able to connect and transfer data with iOS, Android and Windows.
If you don't have a Bluetooth Smart® / Bluetooth BLE device then you can use one of our standard SPP (Serial Port Profile) v2.0 Bluetooth serial adapters instead.

Bluetooth Low Energy 4.0 or higher (BLE) / Bluetooth Smart® is supported by most newer tablets, phones, computers and other Bluetooth enabled devices, including the following devies: Android 4.3+, iPad 3+, iPhone 4S+ and iPad Mini.
The following operating systems support Bluetooth Smart®: iOS 5 and later, Windows Phone 8.1, Windows 8 and later, Android 4.3 and later, BlackBerry 10, Linux 3.4 and later through BlueZ 5.0.

This Bluetooth Smart® wireless serial adapter has a maximum communication range of up to 100 feet (30m) and applications includes automation, home applications, automotive, laboratory, office use and many more, only your imagination is the limit.

The adapter can be configured as a central or peripheral (master or slave) device. It also has multiple other port parameters and functions such as baud rate, flow control, parity, data bits and status request which can be configured/requested by DIP switches or through the COM port using AT commands and a terminal program.
Alternatively the parameters can also be configured using a free downloadable app for either iOS or Android.

Overall features
  • Bluetooth Smart® compatible
  • Supports Bluetooth Low Energy 4.2 (BLE)
  • DIP switches for most settings
  • iOS and Android app available for configuration
  • Can be configured via COM port with AT commands
  • Works as a peripheral or central device
  • Can be powered by: included micro USB cable
  • Internal antenna
  • Communication range up to 100 feet (30m)
  • DCE/DTE controlled by switch
  • LED control lights
  • Supports CTS/RTS flow control
  • Works with most serial RS232 devices
Included items
  • Serial Bluetooth adapter
  • USB cable (for power)
  • Screws and nuts for DB9
  • Datasheet


Useful optional accessories
(not included)

Battery pack
Rechargeable battery pack

null modem adapter
Null modem adapter
Part number USBLE232D
Operating systems iOS 5 and later, Windows Phone 8.1, Windows 8 and later, Android 4.3 and later, BlackBerry 10, Linux 3.4 and later through BlueZ 5.0.
Processor Cypress CY8C4128LQI-BL553
Data payload 251 bytes
Interface type RS232
Mode Central or Peripheral (Master or Slave)
Works with iPad/iPod? Yes
Baud Rate 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600
Parity None, even, odd
Stop bits 1, 1,5, 2
Data bits 7, 8
Flow control None, CTS/RTS
Operating distance Up to 100 feet (30m) in open space
LED lights TX, RX, Bluetooth and Power
DEC/DTE Manual switch
Parameters configurable by - Over the air by iOS and Android app
- Via COM port by AT commands
- DIP switches
RS232 Signals TX, RX, CTS, RTS, GND
Works with NMEA 0183 Yes
Serial port 1-port female D-sub 9-pin
Bluetooth version V4.2
Programming interfaces GATT / UUID
Frequency range 2.4GHz ISM ( 2.40000 – 2.4835GHz)
TX Power Max. 3 dBm
RX Sensitivity -89 dBm typical
TX current consumption 15.6 mA (radio only, 0 dbm)
Antenna Internal
Antenna Gain max. 2 dB
Power supply Mini USB, screw terminals or DB9 pin 9: 5 - 27VDC
Operating temp. -13°F to 158°F (-25°C to 70°C)
Dimensions 81.6mm x 31.75mm x 17mm mm
Total package weight 120g
Certifications CE, FCC

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


The product has been added to the shopping cart.

Continue Shopping View Shopping Cart