RS232 BLE 5.2 Serial Adapter 40M(131.2ft)

3-Second Engineer Understanding

RS232 → BLE 5.2 wireless bridge (plug-and-play, no firmware change required)

Short Introduction

Advanced BLE 5.2 RS232 serial adapter with stable 40-meter wireless transmission, ultra-low power consumption, and dual working modes for industrial equipment and smart device communication.

Product Description

The BLE 5.2 RS232 Serial Adapter is an intelligent wireless data transmission module built on the latest Bluetooth 5.2 protocol for improved performance, stability, and efficiency. It connects to host devices through a standard RS232 interface, enabling reliable wireless data communication between equipment and remote BLE devices.
This adapter supports two operating modes: Data Mode and Configuration Mode. In Data Mode, the module can connect to or be discovered by remote BLE devices for bidirectional data exchange. In Configuration Mode, users can set device parameters including device name and baud rate; the adapter will not be discoverable or connectable in this state.
Equipped with clear LED indicators for power status, Bluetooth working mode, and Bluetooth connection status, this module allows real-time operation monitoring. It features ultra-low power consumption, wide baud rate support, and strong compatibility for industrial control, smart instruments, medical devices, and automation systems.

Why Choose This Adapter

  • No firmware modification required
  • Plug-and-play deployment
  • Industrial-grade stability
  • Lower cost compared to redesigning hardware
  • Ultra-low power for long-term use
  • Wide baud rate support up to 230400bps

Typical Use Cases

  • Upgrade legacy PLC systems to wireless communication
  • Replace RS232 cables in industrial environments
  • Enable remote monitoring of medical or testing equipment
  • Wireless data transmission for instruments and data loggers

Key Features

  • Latest BLE 5.2 protocol for enhanced stability, speed, and anti-interference
  • 40-meter open-field effective transmission distance
  • Dual working modes: Data Mode for communication & Configuration Mode for parameter setup
  • Ultra-low power consumption for long-term battery-powered applications
  • Standard RS232 five-wire interface with DB9 connector
  • Wide baud rate support from 2400bps up to 230400bps
  • Clear LED indicators for power, working status, and Bluetooth connection
  • Industrial-grade operating temperature range for harsh environments
  • Compact size for easy installation and integration

Industrial Reliability

Designed for industrial environments with stable performance, wide operating temperature, and reliable long-term operation.

Meta Description

High-performance BLE 5.2 RS232 serial adapter with 40m range, ultra-low power, dual modes, and wide baud rate support. Ideal for industrial control and wireless serial communication.

Meta Keywords

BLE 5.2 adapter, RS232 wireless module, Bluetooth serial adapter, 40m BLE adapter, low power serial adapter.


Name BLE5.2 Serial Adapter
Specification BLE 5.2
Working band ISM 2.402~2.480GHz
Antenna Built-in ceramic antenna/External antenna
Effective distance 40m in open filed
Protocol LL、SMP、L2CAP、ATT、GAP、GATT
Communication interface Standard RS232 five wire mode
Connector DB9 port
Signal pin RXD, TXD, RTS, CTS, GND
Maximum transmission rate note1 14Kbytes/Sec
Baud Rate 2400、4800、9600、19200、38400、57600、115200、230400bps
Power Consumption note3 Not connected(slave device) 2.9mA(in low speed mode ) note2
5.4mA(in high-speed mode) note2
Not connected(master device) 4.8mA(in low speed mode) note2
7.3mA(in high-speed mode) note2
Connected(no data transmission) 3 mA
Connected(data transmission) note4 5 mA
Working environment Operating temperature -20℃ ~ +70℃
Storage temperature -40℃ ~ +85℃
Humidity 5% ~ 90% no condensation
Size 99mm*34mm*17mm

Note 1: Here refer to the transmission rate between the two adapters. It relates to connection parameters, such as different phones, the rate may be different. If need it up to maximum transmission rate, please set the baud rate to 230400.
Note 2: The baud rate 2400-38400 is low speed mode, and 57600 and above is high speed mode.
Note 3: The voltage of power supply during the test is 12V.
Note 4: The power consumption is based on continuous data transmission at 9600 baud rate within the effective range of 10m.