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Bluetooth Smart® Serial RS232 Adapter
Low Energy 4.1 BLE

  • Model: BLE-232


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This item has been replaced by part BLE232V2.

This serial RS232 Bluetooth adapter is a Bluetooth V4.1 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 Bluetooth Smart® to RS232 serial 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 (BLE) / Bluetooth Smart® is supported by most newer (2015) 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.

Bluetooth Smart® wireless technology has a communication range of up to 330ft (100m) and applications includes automation, home applications, automotive, laboratory, office use and many more, only your imagination is the limit.

The adapter's parameters such as baud rate and other port settings can be configured using a free downloadable app for either iOS or Android.

Overall features
  • Bluetooth Smart® compatible
  • Works as a peripheral
  • Supports Bluetooth Low Energy 4.1 (BLE)
  • Can be powered by: included micro USB cable
  • Internal antenna
  • Communication range up to 300 feet
  • DCE/DTE controlled by switch
  • LED control lights
  • Works with most serial RS232 devices
Included items
  • Serial Bluetooth adapter
  • USB cable (for power)
  • Datasheet


Useful optional accessories
(not included)

Battery pack
Rechargeable battery pack

null modem adapter
Null modem adapter
Part number BLE-232
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.
Interface type RS232
Mode Peripheral / Slave (central / master mode not supported)
Works with iPad/iPod? Yes
Processor 32-bit ARM Cortex M0
Hardware Security 128-bit AES ECB/CCM/AAR co-processor
Baud Rate 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200
Parity None, even
Flow control None, hardware
On-air data rate 250 kbps, 1 Mbps or 2 Mbps
Operating distance Up to 330 feet (100 meters) in open space
LED lights TX, RX, Bluetooth and Power
Modulation GFSK
Connection type Point-to-point
DEC/DTE Manual switch
Parameters configurable by Over the air by iOS and Android app
RS232 Signals TX, RX, CTS, RTS, GND
Serial port 1-port male D-sub 9-pin
Bluetooth version V4.1
Programming interfaces GATT / UUID
Frequency range 2.4GHz ISM ( 2.40000 – 2.4835GHz)
Output power Programmable: +4 to -20dBm in 4dB steps
Sensitivity -93dBm Bluetooth low energy
-96dBm at 250kb
-90dBm at 1Mbs
-85dBm at 2Mbs
Radio current consumption LDO at 1.8V 16mA – TX at +4dBM output power
10.5mA – TX at 0dBm output power
13mA – RX at 1Mbs
Radio current consumption DC-DC at 3V 10.5mA – TX at +4dBm output power
8.1mA – TX at 0dBm output power
9.5mA – RX at 1Mbs
System current consumption 420nA – No RAM retention
530nA - 8k RAM retention
2μA – All peripherals in IDLE mode
Antenna Internal
Power supply 5VDC, 1.5A Max
Operating temp. -20C to 85C (-68 to 185F)
Dimensions 5.3 x 4.0 x 1.8 mm
Certifications CE, FCC

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


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