ATAC BT432 Bluetooth to RS-232, RS-422, or RS-485 Serial Converter

ATAC BT432 RS-232/422/485 Serial over Bluetooth 2.1 Converter
Model: BT432
Availability: 2 Weeks or Less
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ATAC BT432 RS-232/RS485/RS422 Serial over Bluetooth 2.1 Converter, 3 dBi Antenna

The ATAC BT432 is an industrial Bluetooth to serial adapter designed to convert a RS-232 or RS-422/RS-485 serial stream to a short-range wireless connection. The compact module contains a Bluetooth v2.1 core interface, radio electronics, antenna, and management software. It is ideal for surveying equipment, machine-to-machine (M2M) communication, system diagnostics, point-of-sale systems, and remote monitoring. It is often paired with a smartphone to allow it to monitor the console port of a system.

The BT423 transmits data up to 100 meters with the standard 2.4 - 2.483 GHz modular antenna. Optional higher gain antennas will allow it to communicate with devices at further distances. ATAC’s Configuration Utility runs on a standard Windows-based computer to set up the unit and read and write data.

Key Features

  • 1 configurable RS-232/422/485 serial port 
  • Built-in RS-422/RS-485 terminal resistor
  • 1200 bps to 115.2 kbps speed
  • Compliant with Bluetooth v2.1+EDR radio with Class 1 RF
  • Operates in 2.4 GHz to 2.483 GHz ISM frequency band
  • 13 dBm (minimum) transmit power
  • Operating distance up to 100 meters (open space)
  • 9 to 24 VDC power input range
  • AC/DC power adapter available
  • Operating temperature from 0 to 70 °C


BT432-X, Bluetooth to RS-232, RS-422, or RS-485 Serial Converter, No Power Supply
BT432-A, Same as above, US Power Supply


RS-232 Pin Assignments

TypeSerial to Wireless
Serial Interface
Serial Ports1 RS-232/422/485
Data Bits8
Stop Bits1, 2
Flow ControlRTS / CTS
DistanceUp to 100 Meters (Open Space)
Power Consumption150 mA @ 9 V, 60 mA @ 24 V
Input Voltage9 ~ 24 VDC input
Surge ProtectionYes
Dimensions85 x 75 x 25 mm
Weight150 g
LED IndicatorsSYS (red) , Pairing (green) , Rx (red) , Tx (green)
Operating Temperature0 ~ 70 °C
Storage Temperature -25 ~ 80 °C
Download NameFile Size
ATAC BT432 Configuration & Test Guide892.83KB